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Strongly Correlated Electron Systems


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2018

  • Sumanta Mukherjee, Banabir Pal, Indranil Sarkar, Ambroise van Roekeghem, Wolfgang Drube, H. Takagi, Jobu Matsuno, Silke Biermann and D. D. Sarma, Nature of the charge carriers in LaAlO3-SrTiO3 oxide heterostructures probed using hard X-ray photoelectron spectroscopy, EPL (Europhys. Lett.) 123, 47003 (2018).

  • Peitao Liu, Bongjae Kim, Xing-Qiu Chen, D.D. Sarma, Georg Kresse, and Cesare Franchini, Relativistic GW+BSE study of the optical properties of Ruddlesden-Popper iridates, Phys. Rev. Materials 2, 075003 (2018).

  • Soham Mukherjee, Hasitha Ganegoda, Abhinav Kumar, Somnath Pal, Carlo U. Segre, and D. D. Sarma, Evolution of the Local Structure within chromophoric Mn-O5 Trigonal Bipyramids in YMn1-xInxO3 with Composition, Inorg. Chem. 57, 9012 (2018).

  • Shyamashis Das, Somnath Ghara, Priya Mahadevan, A. Sundaresan, J. Gopalakrishnan, and D. D. Sarma, Designing a Lower Bandgap Bulk Ferroelectric Material with a Sizable Polarization at the Room Temperature, ACS Energy Lett. 3, 1176, (2018).

  • Angelo Leo, Anna Grazia Monteduro, Silvia Rizzato, Zoobia Ameer, I.C. Lekshmi, Abhijit Hazarika, Debraj Choudhury, D.D. Sarma, Giuseppe Maruccio, RF and microwave dielectric response investigation of high-k yttrium copper titanate ceramic for electronic applications, Microelectronic Engineering 194, 15 (2018).

  • Somnath Pal, Sharada Govinda, Manik Goyal, Soham Mukherjee, Banabir Pal, Rana Saha, A. Sundaresan, Somnath Jana, Olof Karis, John W. Freeland, and D. D. Sarma, Effect of anti-site disorder on magnetism in La2NiMnO6, , Phys. Rev. B 97, 165137 (2018).

  • Zoobia Ameer, Anna Grazia Monteduro, Silvia Rizzato, Anna Paola Caricato, Maurizio Martino, I. C. Lekshmi, Abhijit Hazarika, Debraj Choudhury, Elisabetta Mazzotta, Cosimino Malitesta, Vittorianna Tasco, D. D. Sarma, Giuseppe Maruccio, Dielectrical performance of high-k yttrium copper titanate thin films for electronic applications, J Mater. Sci.: Mater. Electron. 29, 7090 (2018)

  • Anumol Sugathan, Biswajit Bhattacharyya, V. V. R. Kishore, Abhinav Kumar, Guru Pratheep Rajasekar, D. D. Sarma and Anshu Pandey, Why does CuFeS2 Resemble Gold?, J. Phys. Chem. Lett. 9, 696 (2018).


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2017

  • Banabir Pal, Anjali Singh, Sharada G, Pratibha Mahale, Abhinav Kumar, S. Thirupathaiah, H. Sezen, M. Amati, Luca Gregoratti, Umesh V. Waghmare, and D. D. Sarma, Chemically exfoliated MoS2 layers: Spectroscopic evidence of semiconducting nature of the dominant trigonal metastable phase, Phys. Rev. B 96, 195426 (2017).

  • S. Thirupathaiah, Rajveer Jha, Banabir Pal, J. S. Matias, P. Kumar Das, I. Vobornik, R. A. Ribeiro, and D. D. Sarma, Temperature independent band structure of WTe2 as observed from ARPES, Phys. Rev. B 96, 165149 (2017).

  • S. K. Pandey, Priya Mahadevan and D. D. Sarma, Doping an antiferromagnetic insulator: A route to an antiferromagnetic metallic phase, Europhys. Lett. 117, 57003 (2017).

  • S. Thirupathaiah, Rajveer Jha, Banabir Pal, J. S. Matias, P. Kumar Das, P. K. Sivakumar, I. Vobornik, N. C. Plumb, M. Shi, R. A. Ribeiro, and D. D. Sarma, MoTe2: An uncompensated semimetal with extremely large magnetoresistance, Phys. Rev. B 95, 241105(R) (2017).

  • P. Anil Kumar, Sergey Ivanov, Clemens Ritter, R. Vijayaraghavan, R. Mathieu, P. Nordblad, N. Sadovskaya, and D. D. Sarma, Composition driven structural transition in La2-xSr,xCuRuO6 (0 ≤x ≤1) double perovskites, J. Alloys and Comp. 693, 1096 (2017).


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2016


  • S. Thirupathaiah, Soumi Ghosh, Rajveer Jha, E.D.L. Rienks, Kapildeb Dolui, V.V. Ravi Kishore, B. Bchner, Tanmoy Das, V.P.S. Awana, D.D. Sarma, and J. Fink, Unusual Dirac Fermions on the Surface of a Noncentrosymmetric α-BiPd Superconductor, Phys. Rev. Lett. 117, 177001 (2016).

  • Peitao Liu, Michele Reticcioli, Bongjae Kim, Alessandra Continenza, Georg Kresse, D.D. Sarma, Xing-Qiu Chen, and Cesare Franchini, Electron and hole doping in the relativistic Mott insulator Sr2IrO4 : a first-principles study using band unfolding technique, Phys. Rev. B 94, 195145 (2016).

  • Anna Grazia Monteduro, Zoobia Ameer, Silvia Rizzato, Maurizio Martino, Anna Paola Caricato, Vittorianna Tasco, Indira Chaitanya Lekshmi, Abhijit Hazarika, Debraj Choudhury, D. D. Sarma, Giuseppe Maruccio, Investigation of high-k yttrium copper titanate thin films as alternative gate dielectrics, J. Phys. D 49, 405303 (2016).

  • S. K. Panda, Banabir Pal, Suman Mandal, Mihaela Gorgoi, Shyamashis Das, Indranil Sarkar, Wolfgang Drube, Weiwei Sun, I. Di Marco, P. Thunström, A. Delin, Olof Karis, Y.O. Kvashnin, M. van Schilfgaarde, O. Eriksson, and D. D. Sarma, High photon energy spectroscopy of NiO: experiment and theory, Phys. Rev. B 93, 235138 (2016).

  • Sumanta Mukherjee, Banabir Pal, Debraj Choudhury, Indranil Sarkar, Wolfgang Drube, Mihaela Gorgoi, Olof Karis, H. Takagi, Jobu Matsuno, and D. D. Sarma, Origin and distribution of charge carriers in LaAlO3-SrTiO3 oxide heterostructures in the high carrier density limit, Phys. Rev. B 93, 245124 (2016).

  • S. Thirupathaiah, J. Fink, P. K. Maheshwari, V. V. Ravi Kishore, Z. -H. Liu, E. D. L. Rienks, B. Büchner, V. P. S. Awana, and D. D. Sarma, The effect of impurity substitution on the band structure and the mass renormalization of the correlated FeTe0.5Se0.5 superconductor, Phys. Rev. B 93, 205143 (2016).

  • K. Saikia, D. D. Sarma, and P. Deb, Organization dependent collective magnetic prop- erties of secondary nanostructures with different spatial ordering and magnetic easy axis orientation, J. Mag. Magn. Mater. 408, 127 (2016).

  • Abhishek Nag, S. Middey, Sayantika Bhowal, S.K. Panda, Roland Mathieu, J.C. Orain, F. Bert, P. Mendels, P.G. Freeman, M. Mansson, H.M. Ronnow, M. Telling, P.K. Biswas, D. Sheptyakov, S.D. Kaushik, Vasudeva Siruguri, Carlo Meneghini, D.D. Sarma, Indra Dasgupta, and Sugata Ray, Origin of the Spin-Orbital Liquid State in a Nearly J=0 Iridate Ba3ZnIr2O9, Phys. Rev. Lett. 116, 097205 (2016).

  • Anna Grazia Monteduro, Zoobia Ameer, Maurizio Martino, Anna Paola Caricato, Vittorianna Tasco, Indira Chaitanya Lekshmi, Ross Rinaldi, Abhijit Hazarika, Debraj Choudhury, D. D. Sarma, Giuseppe Maruccio, Dielectric investigation on high-k Yttrium Copper Titanate thin films, J. Materials Chem. C 4, 1080 (2016).

  • S. Middey, J. Chakhalian, P. Mahadevan, J.W. Freeland, A.J. Millis, and D.D. Sarma, Physics of ultrathin films and heterostructures of rare-earth nickelates, Annu. Rev. Mater. Res. 46, 305 (2016).


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2015


  • P. Beran, S.A. Ivanov, P. Nordblad, S. Middey, A. Nag, D.D. Sarma, S. Ray, and R. Mathieu,Neutron powder diffraction study of Ba3ZnRu2-xIrxO9(x = 0, 1, 2) with 6H-type perovskite structure, Solid State Sciences 50, 58 (2015).

  • G. Tsekouras, F. Boudoire, Banabir Pal, M. Vondracek, K. Prince, D. D. Sarma, and A. Braun, Electronic Structure Origin of Conductivity and Oxygen Reduction Activity Changes in Low-Level Cr-Substituted (La,Sr)MnO3, J. Chem. Phys. 143, 114705 (2015).

  • P. A. Bhobe, A. Kumar, M. Taguchi, R. Eguchi, M. Matsunami, Y. Takata, A. K. Nandy, P. Mahadevan, D. D. Sarma, A. Neroni, E. Şaş10ğlu, M. Ležaić, M. Oura, Y. Senba, H. Ohashi, K. Ishizaka, M. Okawa, S. Shin, K. Tamasaku, Y. Kohmura, M. Yabashi, T. Ishikawa, K. Hasegawa, M. Isobe, Y. Ueda, and A. Chainani,
    Electronic structure evolution across the Peierls metal-insulator transition in a correlated ferromagnet,
    Phys. Rev. X 5, 041004 (2015).

  • Peitao Liu, Sergii Khmelevskyi, Bongjae Kim, Martijn Marsman, Dianzhong Li, Xing-Qiu Chen, D.D. Sarma, Georg Kresse, and Cesare Franchini, Anisotropic Magnetic Cou-plings and Structure-Driven Canted to Collinear Transitions in Sr2IrO4 by magnetically constrained noncollinear DFT, Phys. Rev. B 92, 054428 (2015).

  • Banabir Pal, Sumanta Mukherjee, and D.D. Sarma, Probing Complex Heterostructures using Hard X-ray Photoelectron Spectroscopy (HAXPES), J. Electron Spectroscopy & Relat. Phenom. 200, 332 (2015). (Invited article for the special volume).

  • Amar Srivastava, Helene Rotella, Surajit Saha, Banabir Pal, Gopinadhan Kalon, Sinu
    Mathew, Mallikarjuna Motapothula, Michal Dykas, Ping Yang, Eiji Okunishi, D. D.
    Sarma, and T. Venkatesan, Selective growth of single phase VO2 (A, B, and M) polymorph
    thin lms, APL Materials 3, 026101 (2015)

  • Sumanta Mukherjee, Ronny Knut, S. M. Mohseni, T. N. Anh Nguyen, S. Chung, Q.
    Tuan Le, Johan Akerman, Johan Persson, Anindita Sahoo, Abhijit Hazarika, Banabir Pal,
    Sebastian Thiess, Mihaela Gorgoi, P. S. Anil Kumar, Wolfgang Drube, Olof Karis, and D.
    D. Sarma, Role of Boron diusion in CoFeB/MgO magnetic tunnel junctions, Phys. Rev.
    B 91, 085311 (2015)

  • Ali Hossain Khan, Amit Dalui, Soham Mukherjee, Carlo U. Segre, D. D. Sarma, and
    Somobrata Acharya, E cient Solid-State Light-Emitting CuCdS Nanocrystals Synthesized
    in Air, Angew Chem. Int. Ed. (Accepted for publication, 2015)

  • Bharati Panigrahy and D. D. Sarma, Enhanced Photocatalytic E ciency of AuPd
    Nanoalloy Decorated ZnO-Reduced Graphene Oxide Nanocomposites, RSC Adv. 5, 8918
    (2015)

  • Rebecka Lindblad, Naresh K. Jena, Bertrand Philippe, Johan Oscarsson, Dongqin Bi, Andreas
    Lindblad, Suman Mandal, Banabir Pal, D. D. Sarma, Olof Karis, Hans Siegbahn,
    Erik M. J. Johansson, Michael Odelius, and H akan Rensmo, The Electronic Structure of
    CH3NH3PbX3 Perovskites; the Dependence on the Halide Moiety, J. Phys. Chem. C 119,
    1818 (2015)

  • Leyla Isaeva, Jill Sundberg, Soham Mukherjee, Christopher J. Pelliccione, Andreas Lindblad,
    Carlo U. Segre, Ulf Jansson, D.D. Sarma, Olle Eriksson and Krisztina K adas,
    Amorphous W-S-N Thin Films: the Atomic Structure Behind Ultra-low Friction, Acta
    Materialia 82, 84 (2015)


 

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2014


  • Y. Takahashi, V. K. Verma, G. Shibata, T. Harano, K. Ishigami, K. Yoshimatsu, T.
    Kadono, A. Fujimori, A. Tanaka, F.-H. Chang, H.-J. Lin, D. J. Huang, C. T. Chen, B.
    Pal and D. D. Sarma, Observation of magnetically hard grain boundaries in doubleperovskite Sr2FeMoO6, Europhys. Lett. 108, 27003 (2014)

  • Subhamoy Ghatak, Sumanta Mukherjee, Manish Jain, D. D. Sarma, and Arindam
    Ghosh, Microscopic origin of low frequency noise in MoS2 field effect transistors, APL
    Materials 2, 092515 (2014)

  • Priti A Mangrulkar, Abhay V. Kotkondawar, Sumanta Mukherjee, Meenal V Joshi, Nitin
    Labhsetwar, D. D. Sarma and Sadhana Suresh Rayalu, Throwing light on Platinized
    Carbon nanostructured composite for hydrogen generation, Energy Environ. Sci. 7, 4087
    (2014)

  • C. Marini, B. Joseph, S. Caramazza, F. Capitani, M. Bendele, M. Mitrano, D. Chermisi,
    S. Mangialardo, B. Pal, M. Goyal, A. Iadecola, O. Mathon, S. Pascarelli, D. D. Sarma
    and P. Postorino, Local disorder investigation in NiS2xSex using Raman and Ni K-edge
    x-ray absorption spectroscopies, J. Phys.: Condens. Matter 26, 452201 (2014)

  • S. K. Panda, P. Thunstrom, I. Di Marco, J. Schott, A. Delin, I. Dasgupta, O. Eriksson,
    and D. D. Sarma, A charge self-consistent LDA+DMFT study of the spectral properties
    of hexagonal NiS, New J. Phys. 16, 093049 (2014)

  • Soham Mukherjee, Angshuman Nag, Vancho Kocevski, Pralay K. Santra, Mahalingam
    Balasubramanian, Soma Chattopadhyay, Tomohiro Shibata, Franz Schaefers, Jan Rusz,
    Celine Gerard, Olle Eriksson, C.U. Segre, and D.D. Sarma, A microscopic description of
    the evolution of the local structure and an evaluation of the chemical pressure concept in a solid solution, Phys. Rev. B 89, 224105 (2014)

  • S. Middey, Saikat Debnath, Priya Mahadevan, and D. D. Sarma, A high Neel temperature
    5d oxide: NaOsO3, Phys. Rev. B 89, 134416 (2014)

  • Sumanta Mukherjee, Arnab Saha, Pralay K. Santra, S. Sengupta, and D. D. Sarma,
    Beyond the "Co ee Ring": Re-entrant Ordering in an Evaporation-Driven Self-Assembly
    in a Colloidal Suspension on a Substrate, J. Phys. Chem. B 118, 2559(2014).

  • D. Choudhury and D. D. Sarma, Robust dielectric properties of B-site size-disordered
    hexagonal Ln2CuTiO6 (Ln = Y, Dy, Ho, Er, and Yb), J. Vac. Sci. Technol. B 32, 03D118
    (2014).

  • P. Anil Kumar, R. Mathieu, P. Nordblad, Sugata Ray, Olof Karis, and D. D. Sarma,
    Re-entrant superspin glass phase in La0:82Ca0:18MnO3 ferromagnetic insulator, Phys. Rev. X 4, 011037 (2014)

  • S. Paul, A. Ghosh, T. Sato, D. D. Sarma, T. Takahashi, E. Wang, M. Greenblatt and S.
    Raj, Electronic band structure and Fermi surfaces of the quasi{two-dimensional monophosphate tungsten bronze, P4W12O44, Europhys. Lett. 105, 47003 (2014).

  • P. Anil Kumar, Sugata Ray, S. Chakravertya and D.D. Sarma, Magnetoresistance and
    electroresistance e ects in Fe3O4 nanoparticle system, J. Experimental Nanosci. 9 , 391
    (2014)


 

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2013


  • S. K. Panda, I. Dasgupta, E. Sasioglu, S. Blugel, and D. D. Sarma, NiS - An unusual self-doped, nearly compensated antiferromagnetic metal, Scientific Reports 3, 2995 (2013)

  • Ronny Knut, Peter Svedlindh, Oleg Mryasov, Klas Gunnarsson, Peter Warnicke, D.A. Arena, Matts Bjorck, Andrew J.C. Dennison, Anindita Sahoo, Sumanta Mukherjee, D. D. Sarma, Sari Granroth, Mihaela Gorgoi, and Olof Karis, Interface characterization of Co2MnGe/Rh2CuSn Heusler multilayers, Phys. Rev. B, 88, 134407 (2013)

  • P. Anil Kumar, Sugata Ray, S. Chakraverty, and D. D. Sarma, Engineered spin-valve type magnetoresistance in Fe3O4-CoFe2O4 core-shell nanoparticles, Appl. Phys. Lett. (Accepted 2013).

  • Abhijit Hazarika, Arunasish Layek, Suman De, Angshuman Nag, Saikat Debnath, Priya Mahadevan, Arindam Chowdhury, and D. D. Sarma, Ultra-narrow and widely tunable Mn2+ Emission from Single Nanocrystals of ZnS-CdS alloy, Phys. Rev. Lett. 110, 267401 (2013).

  • D. Choudhury, B. Pal, A. Sharma, S. V. Bhat and D. D. Sarma, Magnetization in electron- and Mn-doped SrTiO3, Scientific Reports 3, 1433 (2013).

  • Celine Gerard, Ruma Das, Priya Mahadevan, and D. D. Sarma, Effective Mass Driven Structural Transition in Mn-doped ZnS Nanoplatelet, J. Phys. Chem. Lett. 4, 1023 (2013).

  • D. D. Sarma, Pralay Kanti Santra, Sumanta Mukherjee, and Angshuman Nag, X-Ray Photoelectron Spectroscopy: A Unique Tool to Determine the Internal Heterostructure of Nanoparticles, Chem. Mater. 25, 1222 (2013).

  • Sanhita Paul, Anirudha Ghosh, Pavel Dudin, Alexei Barinov, Anirban Chakraborty, Sugata Ray, D.D. Sarma, Shuji Oishi, and Satyabrata Raj, Photoelectron spectromicroscopy study of metalinsulatortransition in NaxWO3, Solid State. Comm. 166, 66 (2013).

  • Ashis Nandy, Priya Mahadevan and D.D. Sarma, The Spin and orbital physics of the alkali superoxides (A p-band orbital ordering), Concepts and Methods in Modern Theoretical Chemistry: Electronic Structure and Reactivity, Ed. P. Chattaraj and S. Ghosh, (2012), Taylor and Francis.

  • Sunita Dey, Barun Das, Rakesh Voggu, Angshuman Nag, D. D. Sarma and C. N. R. Rao, Interaction of CdSe and ZnO nanocrystals with electron-donor and -acceptor molecules, Chem. Phys. Lett. 556, 200 (2013).

  • D. K. Bora, Y. Hu, S. Thiess, S. Erat, X. Feng, S. Mukherjee, G. Fortunato, N. Gaillard, Rita Toth, K. Gajda-Schrantz, W. Drube, M. Grtzel, J. Guo, J. Zhu, E. C. Constable, D.D. Sarma, H. Wang, and A. Braun, Between Photocatalysis and Photosynthesis: Synchrotron spectroscopy methods on molecules and materials for solar hydrogen generation, J. Electron Spectrosc. Relat. Phenom. (In press)

  • Somobrata Acharya, Bidisa Das, Umamahesh Thupakula, Katsuhiko Ariga, D. D. Sarma, Jacob Israelachvili, and Yuval Golan, A Bottom-Up Approach toward Fabrication of Ultrathin PbS Sheets, Nano Lett. 13 , 409 (2013).


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2012


  • S. Baidya, S. Sarkar, T. Saha-Dasgupta, and D.  D.  sarma, Interplay of localized and itinerant character of Ru ions: Tl2Ru2O7  versus Hg2Ru2O7, Phys. Rev.  B 86, 125117 (2012).

  • P. Anil  Kumar, R. Mathieu, R. Vijayaraghavan, S. Majumdar, O. Karis, P. Nordblad, B. Sanyal, O. Eriksson, and D.  D.  Sarma, Ferrimagnetism, Antiferromagnetism and Magnetic Frustration in La2−xSrxCuRuO6  (0 ≤ x ≤ 1), Phys. Rev. B 86, 094421 (2012).

  • P. Anil Kumar and D. D. Sarma, Effect of ”dipolar-biasing” on the tunability of tunneling magnetoresistance in transition metal oxide systems, Appl.  Phys. Lett.  . Appl. Phys. Lett.  100, 262407 (2012).

  • C. Marini, A. Perucchi, P. Dore, D. Topwal, D.D.  Sarma, S. Lupi, and P. Postorino, Volume dependent quasiparticle spectral weight in, NiS2−xSex  system, 6th Workshop on Infrared Spectroscopy and Microscopy with Accelerator-Based Sources, Journal of Physics: Conference Series 359, 012012 (2012).

  •  V. Thakare, G. Xing, H. Peng, A. Rana, O. Game, P. Anil  Kumar, A. Banpurkar, Y. Kolekar, K. Ghosh, T. Wu, D.  D.  Sarma, and S. B. Ogale, High sensitivity low field magnetically gated resistive switching in CoFe2O4/La0.66Sr0.34MnO3 heterostructure, Appl. Phys. Lett. 100, 172412 (2012).

  • D. Choudhury, P. Mandal, R. Mathieu, A. Hazarika, S. Rajan, A. Sundaresan, U. V.Waghmare, R. Knut, O. Karis, P. Nordblad, and D. D. Sarma, Near room-temperature colossal magnetodielectricity and multiglass properties in partially-disordered La2NiMnO6, Phys. Rev. Lett. 108, 127201 (2012).

  • Sanhita Paul, Anirudha Ghosh, Anirban Chakraborty, Luca Petaccia, D. Topwal, D. D.Sarma, S. Oishi, Satyabrata Raj, Temperature dependent photoemission spectroscopy on lightly-doped sodium tungsten bronze, Solid State Commun. 152, 493 (2012).


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2011


 

  • C. Marini, A. Perucchi, D. Chermisi, P. Dore, M. Valentini, D. Topwal, D.D.  Sarma, S.Lupi, and P. Postorino, A combined Raman and Infrared investigation of the Insulator to Metal Transition in NiS2−xSex  compounds, Phys. Rev. B 84, 235134 (2011).

  • D. Choudhury, Sumanta Mukherjee, P. Mandal, A. Sundaresan,  U. V. Waghmare, S.Bhattacharjee, R. Mathieu, P. Lazor, O. Eriksson, B. Sanyal, P. Nordblad, A. Sharma, S. V. Bhat, O. Karis, and D.  D.  Sarma, Tuning of dielectric properties and magnetism of SrTiO3  by site-specific doping of Mn, Phys. Rev. B 84, 125124 (2011).

  • Srimanta Middey, Priya Mahadevan, and D.  D.  Sarma, Dependence of magnetism on the GdFeO3 distortion in a t2g  system, ARuO3  (A = Sr, Ca), Phys.Rev. B 83, 014416 (2011).

  • S. Ray, S. Middey, S. Jana, A. Banerjee, P. Sanyal, R. Rawat, L. Gregoratti and D. D. Sarma, Origin of the unconventional magnetoresistance in Sr2FeMoO6, Euro. Phys. Lett.94,47007

  • Srimanta Middey, Sugata Ray, K. Mukherjee, P. L. Paulose, E. V. Sampathkumaran, C. Meneghini, S. D. Kaushik, V. Siruguri, and D. D. Sarma, Glasslike ordering and spatial inhomogeneity of magnetic structure in Ba3FeRu2O9: Role of Fe/Ru site disorder, Phys. Rev. B 83, 144419 (2011).

  • Hena Das, Prabuddha Sanyal, T. Saha-Dasgupta, and D. D. Sarma, Origin of magnetism and trend in Tc in Cr-based double perovskites: Interplay of two driving mechanisms, Phys. Rev. B 83, 104418 (2011)

  • Srimanta Middey, Priya Mahadevan, and D. D. Sarma, Dependence of magnetism on the GdFeO3 distortion in a t2g system, ARuO3 (A = Sr, Ca), Phys.Rev. B 83, 014416 (2011).


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2010


  • Debraj Choudhury, A. Venimadhav, C. Kakarla, Kris T. Delaney, P. Sujatha Devi, P. Mondal, R. Nirmala, J.Gopalakrishnan, Nicola A. Spaldin, Umesh V. Waghmare, and D. D. Sarma, Unusual dielectric response in B-site disordered hexagonal transition metal oxides, Appl. Phys. Lett., 96, 162903 (2010).

  • K. V. Shanavas, Debraj Choudhury, I. Dasgupta, Surinder M. Sharma, and D. D. Sarma,
    Origin of ferro-electric polarization in spiral magnetic structure of MnWO4, Phys. Rev. B, 81, 212406 (2010).

  • Debraj Choudhury, Abhijit Hazarika, Adyam Venimadhav, Chandrasekhar Kakarla, Kris T. Delaney, P. Sujatha Devi, P. Mondal, R.Nirmala, J. Gopalakrishnan, Nicola A. Spaldin, Umesh V. Waghmare, and D. D. Sarma, Electric and magnetic polarizabilities of hexag- onal Ln2CuTiO6 (Ln = Y, Dy, Ho, Er and Yb), Phys. Rev. B 82, 134203 (2010).


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2009


  • S. Raj, T. Sato, S. Souma, T. Takahashi and D. D. Sarma, Metal-insulator transition of NaxWO3 studied by angle-resolved photoemission spectroscopy, Mod. Phys. Lett. B 23, 2819 (2009).

  • A. Perucchi, C. Marini, M. Valentini, P. Postorino, R. Sopracase, P. Dore, P. Hansmann,
    O. Jepsen, G. Sangiovanni, A. Toschi, K. Held, D. Topwal, D. D. Sarma, and S. Lupi,
    Pressure and alloying e.ects on the metal to insulator transition in NiS2-xSex studied by
    infrared spectroscopy, Phys. Rev. B 80, 073101 (2009).

  • C. Meneghini, Sugata Ray, F. Liscio, F. Bardelli, S. Mobilio and D. D. Sarma, Nature of "disorder" in the ordered double perovskite Sr2FeMoO6, Phys. Rev. Lett. 103, 046403 (2009).

  • F. Bardelli, C. Meneghini, S. Mobilio, Sugata Ray and D. D. Sarma, Local structure of Sr2FeMoxW1-xO6 double perovskites across the composition driven metal to insulator transition, J. Phys.: Cond. Matter. 21, 195502 (2009).

  • Hena Das, Umesh V. Waghmare, T. Saha-Dasgupta, D. D. Sarma, Theoretical evidence and chemical origin of the magnetism-dependent electrostructural coupling in La2NiMnO6, Phys. Rev. B 79, 144403 (2009).

  • P. Gambardella, S. Stepanow, A. Dmitriev, J. Honolka, F. de Groot, M. Lingenfelder, S. Sen Gupta, D. D. Sarma, P. Bencok, S. Stanescu, S. Clair, S. Pons, N. Lin, A. P. Seitsonen, H. Brune, J. V. Barth and K. Kern, Supramolecular control of the magnetic anisotropy in two-dimensional high-spin Fe arrays at a metal interface, Nature Materials 8, 189 - 193 (2009)

  • Satyabrata Raj, Anirban Chakraborty, Debraj Choudhury, Takafumi Sato, Takashi Takahashi, Priya Mahadevan, Jun Fujii, Ivana Vobornik and D. D. Sarma, Three-dimensional band structure of highly metallic Na{0.8}WO{3} by angle-resolved photoemission spectroscopy, Phys. Rev. B 79, 035119 (2009).

     

  • D. Di Castro, P. Dore, R. Khasanov, H. Keller, P. Mahadevan, Sugata Ray, D. D. Sarma and P. Postorino, Pressure eects on the magnetic transition temperature in ordered double perovskites, Phys. Rev. B 78,184416 (2008).


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2008


  • S. Raj, T. Sato, S. Souma, T. Takahashi, D. D. Sarma, Priya Mahadevan, J. C. Campuzano, M. Greenblatt and W. H. McCarroll, Direct evidence for hidden one-dimensional Fermi surface of hexagonal K{0.25}WO{3}, Phys. Rev. B 77, 245120 (2008)

     

  • Prabuddha Sanyal, Subhra Sen Gupta, Nandan Pakhira, H. R. Krishnamurthy, D. D. Sarma and T. V. Ramakrishnan, Theory of the unusual doping and temperature dependence of photoemission spectra in manganites, Euro Phys. Lett. 82, 47010 (2008)

     

  • Hena Das, Umesh V. Waghmare, T. Saha-Dasgupta, D.D. Sarma, Electronic structure, phonons and dielectric anomaly in ferromagnetic insulating double-pervoskite La2NiMnO6, Phys. Rev. Lett. 100, 186402 (2008)


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2007


  • D. Marrocchelli, P. Postorino, D. Di Castro, E. Arcangeletti, P. Dore, M. Cestelli Guidi, Sugata Ray, and D.D. Sarma, Pressure and temperature dependence of the Fano resonance in the Raman spectrum of A{2}FeMoO{6} (A = Sr, Ca) systems, Phys. Rev. B 76, 172405 (2007).

  • T. Saha-Dasgupta, Molly De Raychaudhury, and D. D. Sarma, Ferromagnetism in metallic chalcospinels CuCr2S4 and CuCr2Se4, Phys. Rev. B 76, 054441 (2007)

     

  • S. Raj, H. Matsui, S. Souma, T. Sato, T. Takahashi, A. Chakraborty, D. D. Sarma, P.Mahadevan, S. Oishi, W. H. McCarroll, and M. Greenblatt, Electronic structure of sodium tungsten bronzes Na{x}WO{3} by high-resolution angle-resolved photoemission spectroscopy, Phys. Rev. B. 75, 155116, (2007).

     

  • M. Kobayashi, K. Tanaka, A. Fujimori, Sugata Ray, and D.D. Sarma, Critical test for Altshuler-Aronov Theory: Evolution of the density of states singularity in double perovskite Sr{2}FeMoO{6} with controlled disorder, Phys. Rev. Lett. 98, 246401 (2007).

  • D.D. Sarma, Sugata Ray, K. Tanaka, M. Kobayashi, A. Fujimori, P. Sanyal, H.R. Krishnamurthy and C. Dasgupta, Intergranular magnetoresistance in Sr{2}FeMoO{6} from a magnetic tunnel barrier mechanism, Phys. Rev. Lett. 98, 157205 (2007).

     

  • Molly De Raychaudhury, T. Saha-Dasgupta, and D. D. Sarma, Theoretical study of doped Tl{2}Mn{2}O{7} and Tl{2}Mn{2}O{7} under pressure, Phys. Rev. B 75, 014443 (2007).

  • S. Raj, D. Hashimoto, H. Matsui, S. Souma, T. Sato, T. Takahashi, S. Ray, A. Chakraborty, D. D. Sarma, P. Mahadevan, S. Oishi, W. H. McCarroll, M. Greenblatt, Metal-insulator transition in sodium tungsten bronzes, Na{x}WO{3}, studied by angle-resolved photoemission spectroscopy, J. Magen. Mag. Mater 310, 231 (2007)

  • Suparna Banerjee, Parukuttyamma Sujatha Devi, Dinesh Topwal, Suman Mandal, and Krishnakumar Menon, Enhanced Ionic Conductivity in Ce0.8Sm0.2O1.9: Unique Effect of Calcium Co-doping, Adv. Funct. Mater. 17, 284, 2007


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2006


  • U. Manju, V.P.S. Awana, H. Kishan, D. D. Sarma, X-ray photoelectron spectroscopy of superconducting RuSr{2}Eu{1.5}Ce{0.5}Cu{2}O{10} and nonsuperconducting RuSr{2}EuCeCu{2}O{10}, Phys. Rev. B 74, 245106 (2006) .

  • V. B. Shenoy, D. D. Sarma and C.N.R. Rao, Electronic Phase Separation in Correlated Oxides: The Phenomenon, its Present Status and Future Prospects, ChemPhysChem 7, 2053 (2006).

  • S. Raj, D. Hashimoto, H. Matsui, S. Souma, T. Sato, T. Takahashi, D. D. Sarma, Priya Mahadevan, and S. Oishi, Angle-Resolved Photoemission Spectroscopy of the insulating Na{x}WO{3}: Anderson localization, polaron formation, and remnant Fermi surface, Phys. Rev. Lett. 96, 147603 (2006).

  • S. Ray, D. D. Sarma and R. Vijayaraghavan, Electron-spectroscopic investigation of the metal-insulator transition in Sr{2}Ru{1-x}Ti{x}O{4} (x = 0.0 - 0.6),  Phys. Rev. B 73, 165105 (2006).

  • K. Maiti, U. Manju, S. Ray, P. Mahadevan, I.H. Inoue, C. Carbone, and D.D. Sarma, Understanding the bulk electronic structure of Ca{1-x}Sr{x}VO{3}, Phys. Rev. B 73, 052508 (2006).

  • Dinesh Topwal, D. D. Sarma, H. Kato, Y. Tokura and M. Avignon, Structural and Magnetic properties of Sr{2}Fe{1+x}Mo{1-x}O{6} with -1 < x < 0.25, Phys. Rev. B 73, 094419 (2006).

  • Dinesh Topwal, U. Manju, S. Ray, S. Raj, D. D. Sarma, S.R. Krishnakumar, M. Bertolo, S. La Rosa and G. Cautero, A microspectroscopic study of the electronic inhomogeneity of ordered and disordered Sr{2}FeMoO{6}, J. Chem. Sci. 118, 87 (2006).


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2005


  • S. Raj, D. Hashimoto, H. Matsui, S. Souma, T. Sato, T. Takahashi, S. Ray, A. Chakraborty, D. D. Sarma, P. Mahadevan, W. H. McCarroll, M.Greenblatt, Angle-resolved photoemission spectroscopy on the metallic sodium tungsten bronzes Na{x}WO{3}, Phys. Rev. B 72, 125125 (2005).

  • C. Monesi, C. Meneghini1, F. Bardelli, M. Benfatto, S. Mobilio, U. Manju and D. D. Sarma, Local structure in LaMnO{3} and CaMnO{3} perovskites: A quantitative  structural refinement of Mn K -edge XANES data, Phys. Rev. B 72, 174104 (2005).

  • C. Grazioli, D. Alf, S.R. Krishnakumar, S. Sen Gupta, M. Veronese, S. Turchini, N. Bonini, A. Dal Corso, D. D. Sarma, S. Baroni and C. Carbone, Spin-flop ordering from frustrated ferro- and antiferromagnetic interactions: A combined theoretical and experimental study of a Mn/Fe(100) monolayer, Phys. Rev. Lett. 95, 117201 (2005).

  • H. Iwasawa, T. Saitoh, Y. Yamashita, D. Ishii, H. Kato, N. Hamada, Y. Tokura, and D. D. Sarma, Strong correlation effects of the Re 5d electrons on the metal-insulator transition in Ca{2}FeReO{6},  Phys. Rev. B  71, 075106 (2005)

  • K. Takubo, T. Mizokawa, S. Hirata, J.-Y. Son, A. Fujimori, D. Topwal, D. D. Sarma, S. Rayaprol and E.-V. Sampathkumaran, Electronic structure of Ca{3}CoXO{6}(X = Co, Rh, Ir) studied by x-ray photoemission spectroscopy, Phys. Rev. B  71, 073406 (2005).

  • K. Maiti, Manju Unnikrishnan, I.H. Inoue and D.D. Sarma, Electronic structure of early transition metal oxides, Ca{1-x}Sr{x}VO{3} and La{1-x}Ca{x}VO{3}: What can we learn from photoelectron spectroscopy, Thin Solid Films  486, 162 (2005).

  • S. Ray and D. D. Sarma, An Interesting Magnetoresistive System: Sr{2}FeMoO{6}, Solid State Physics (India) - Proceedings of the DAE Symposium (2003), Volume 46, page 929, 2005 and cond-mat/0411400.

  • F. Bardelli, C. Meneghini, S. Mobilio, S. Ray and D. D. Sarma, Local structure of Sr{2}FeMo{x}W{1-x}O{6} double perovskites studied by EXAFS, Phys. Scr. T115, 457 (2005)


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2004


  • P. Mahadevan, A. Zunger and D. D. Sarma, Unusual directional dependence of exchange energies in GaAs:Mn - Is the RKKY limit relevant, Phys. Rev. Lett. 93, 177201 (2004)

  • D. D. Sarma, Dinesh Topwal, Manju U., S. R. Krishnakumar, M. Bertolo, S. La Rosa, G. Cautero, T. Y. Koo, P. A. Sharma, S-W. Cheong and A. Fujimori, Direct observation of large electronic domains with memory effect in doped manganites, Phys. Rev. Lett.  93, 097202 (2004).

  • J. Okabayashi, K. Ono, M. Mizuguchi, M. Oshima, S. Sen Gupta, D. D. Sarma, T. Mizokawa, A. Fujimori, M. Yuri, C.T. Chen, T. Fukumura, M. Kawasaki and H. Koinuma, X-ray absorption spectroscopy of transition-metal doped oxide diluted magnetic semiconductors Zn{1-x}M{x}O, J. Appl. Phys. 95, 3573 (2004).


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2003


  • J. B. Philipp, P. Majewski, L. Alff, A. Erb, R. Gross, T. Graf, M. S. Brandt, J. Simon, T. Walther, W. Mader, D. Topwal and D. D. Sarma, Structural and doping effects in the half-metallic double perovskite A{2}CrWO{6}, (A = Sr, Ba, and Ca) Phys. Rev. B 68, 144431(2003).

  • Y. Ishida, D. D. Sarma, K. Okazaki, J. Okabayashi, J. I. Hwang, H. Ott, A. Fujimori, G. A. Medvedkin, T. Ishibashi, and K. Sato, In situ photoemission study of the room-temperature ferromagnet ZnGeP{2}:Mn., Phys. Rev. Lett. 91 , 107202 (2003).

  • P. Postorino, A. Congeduti, P. Dore, A. Sacchetti, F. Gorelli, L. Ulivi, A. Kumar and D. D. Sarma, Pressure-tuning of the electron-phonon coupling: the insulator to metal transition in manganites, Phys. Rev. Lett. 91 , 175501 (2003).

  • K. Sato, G. A. Medvedkin, T. Ishibashi, S. Mitani, K. Takanashi, Y. Ishida, D. D. Sarma, J. Okabayashi, A. Fujimori, T. Kamatani, H. Akai,  Novel Mn-doped Chalcopyrites (INVITED). 13th Int. Conf. on Ternary and Multinary Compounds - ICTMCI3, Oct. 14-18, 2002, Paris France, Abst. 02-3; J. Phys. Chem. Solids 64, 1461 (2003).

  • F. Bardelli, C. Meneghini, S. Mobilio, S. Ray and D. D. Sarma, Local structure of Sr{2}FeMo{1-x}W{x}O{6} double perovskites studied by EXAFS,  Phys. Scr.2005,457

  • S. Ray, P. Mahadevan, A. Kumar, D. D. Sarma, R. Cimino, M Pedio, L. Ferrari and A. Pesci, Strong correlation effects in the electronic structure of Sr{2}FeMoO{6}, Phys. Rev. B. 67, 085109 (2003).


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2002


  • D. D. Sarma, N. Shanthi and T. Saha-Dasgupta, Estimation of electronic interaction strengths from ab-initio calculations, to appear in Advances in Condensed Matter Science, Vol. 4, Taylor & Francis, London, 2002.

  •  K. Maiti and D. D. Sarma, A spectroscopic investigation of the electronic structure of hole doped one dimensional cuprates, Ca{2}CuO{3} and Sr{2}CuO{3}, Phys. Rev. B 65, 174517 (2002).

  • J. Okabayashi, T. Mizokawa, D. D. Sarma, A. Fujimori, T. Slupinski, A. Oiwa and H. Munekata, Electronic structure of In{1-x}Mn{x}As studied by photoemission spectroscopy: Comparison with Ga{1-x}Mn{x}As, Phys. Rev. B (Rapid Comm.) 65, 161203 (2002).

  • C. Meneghini, C. Castellano, S. Mobilio, Ashwani Kumar, S. Ray and D. D. Sarma, Local structure of hole doped manganites: influence of temperature and applied magnetic field, J. Phys.: Condensed Matter 14, 1967 (2002).

  • Z. Hu, P. Mahadevan, D. D. Sarma, G. Kaindl and L. T. Tjeng, Study of valence and covalence as well as spin states of late transition metal oxides by x-ray absorption spectroscopy, in Recent Research Developments in Physics, (Transworld Research Network).

  • Z. Hu, C. Grazioli, M. Knupfer, M. S. Golden, J. Fink, P. Mahadevan, A. Kumar, S. Ray, D. D. Sarma, S. Warda, D. Reinen, S. Kawasaki, M. Takano, C. Schssler-Langeheine, C. Mazumdar and G. Kaindl, Difference in spin state and covalence between La{1-x}Sr{x}CoO{3} and La{2-x}Sr{x}Li{0.5}Co{0.5}O{4}, J. Alloy and Comp. 343, 5 (2002).

  • Priya Mahadevan, K. Terakura and D. D. Sarma, On charge and orbital ordering in La{0.5}Sr{1.5}MnO{4}, Proceedings of the 4th Asian Workshop on First-Principles .

  • Electronic Structure Calculations, Taiwan, October, 2001, pp. 40, pubished by National Centre for Theoretical Sciences, Taiwan,2002.


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2001


  • C. Meneghini, D. Levy, S. Mobilio, M. Ortolani, M. Nu\ {n}ez-Reguero, Ashwani Kumar and D. D. Sarma, High pressure structure and electronic transport in hole-doped La{3/4}Ca{1/4}MnO{3} perovskites, Phys. Rev. B 65, 12111 (2001).

  • C. Castellano, F. Cordero, R. Cantelli, M. Ferretti and D. D. Sarma, Dynamics of the low temperature inhomogeneous phase in manganese perovskites, Solid State Commun. 120, 317 (2001).

  • K. Maiti, D. D. Sarma, M. J. Rozenberg, I. H. Inoue, H. Makino, O. Goto, M. Pedio, and R. Cimino, Electronic structure of Ca{1-x}Sr{x}VO{3}: a tale of two energy-scales, Europhys. Lett. 55, 246 (2001).

  • T. Saha-Dasgupta and D. D. Sarma, Ab initio study of disorder effects on the electronic and magnetic structure of Sr{2}FeMoO{6}, Phys. Rev. B 64, 064408 (2001).

  • A. Congeduti, P. Postorino, P. Dore, A. Nucara, S. Lupi, S. Mercone, P. Calvani, A. Kumar and D. D. Sarma, Infrared study of charge delocalization induced by pressure in the La{0.75}Ca{0.25}MnO{3} manganite, Phys. Rev. B 63, 184410 (2001).

  • A. Congeduti, P. Postorino, E. Caramagno, M. Nardone, A. Kumar and D. D. Sarma, Anomalous high pressure dependence of the Jahn-Teller phonon in La{0.75}Ca{0.25}MnO{3}, Phys. Rev. Lett. 86, 1251 (2001).

  • S. R. Krishnakumar, T. Saha-Dasgupta, N. Shanthi, P. Mahadevan, and D. D. Sarma, Electronic structure of and covalency driven metal-insulator transition in BaCo{1-x}Ni{x}S{2}, Phys. Rev. B 63, 45111 (2001).

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