Dr. Subhash Thota Professor Office: Room No. 008, Department of Physics, IIT Guwahati, Guwahati - 781 039 Phone: +91 361 258 2728 (Office) / 4728 (Resi.) Email: subhasht@iitg.ac.in Webpage:http://subhashiitk.googlepages.com Research: Materials Science and Engineering & Experimental Condensed Matter Physics

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Welcome

Dr. Subhash is a Materials Scientist & Experimental Condensed Matter Physicist whose research interests are driven by current experimental observations that challenge the standard paradigms of Magnetism, Charge-transport, Spincaloritronics or Magneto-dielectrics. He earned his Ph.D. from Materials Science Programme of Indian Institute of Technology Kanpur in 2009. Subsequently, he spent two years as a Postdoctoral fellow working on Magnetic-Superlattices from the CNRS laboratory CRISMAT located at Caen, France. Currently he is working as Professor at the Department of Physics, Indian Institute of Technology Guwahati.

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Selected Publications

Magnetic structure and field-induced transitions in the triangular spin-1 antiferromagnet NiNb2O₆: Observation of a triple point
R. Maruthi, S. Singh, S. Ghosh, M. S. Seehra, B. Weise, W. Prellier, S. Thota
Phys. Rev. B 108, 224430,(2023)APS

Unraveling the nature of ferrimagnetism and associated exchange interactions in distorted honeycomb Ni₄Nb₂O₉
S. Thota, M. S. Seehra, M. R. Chowdhury, H. Singh, S. Ghosh, S. K. Jena, P. Pramanik, T. Sarkar, R. S. Rawat, R. Medwal, and B. Weise
Phys. Rev. B 106, 134418,(2022)APS

Phonon scattering and magnetic manifold switching in (GdSm)CrO₃
S. Das, R. K. Dokala, B. Weise, P. K. Mishra, R. Medwal, R. S. Rawat, and S. Thota
Phys. Rev. Materials 7, 084410,(2023)APS

Strong correlation between structure and magnetic ordering in tetragonally distorted off-stoichiometric spinels
P. Pramanik, M. Reehuis, M. Tovar, A. Hoser, J.-U. Hoffmann, Y. S. Chen, J. G. Lin, B. Weise, A. Waske, and S. Thota
Phys. Rev. Materials 6, 034407,(2022)APS

Magnetic ground state and exchange interactions in the Ising chain ferromagnet CoNb₂O₆
Subhash Thota, Sayandeep Ghosh, Maruthi R, Deep C. Joshi, Rohit Medwal, Rajdeep S. Rawat, and Mohindar S. Seehra
Phys. Rev. B 103, 064415,(2021)APS

Lattice dynamics and magnetic exchange interactions in GeCo₂O₄: A spinel with S=1/2 pyrochlore lattice
P. Pramanik, S. Singh, M. R. Chowdhury, S. Ghosh, V. Sathe, K. M. Rabe, D. Vanderbilt, M. S. Seehra, and S. Thota
Phys. Rev. B 104, 014433,(2021)APS

Low-temperature anomalous spin correlations and Kondo effect in ferromagnetic SrRuO₃/LaNiO₃/La_0.7Sr_0.3MnO₃ trilayers
Sayandeep Ghosh, R. G. Tanguturi, P. Pramanik, D. C. Joshi, P. K. Mishra, S. Das, and S. Thota
Physical Review B. 99, 115135(2019)APS

Magnetic ground state, field-induced transitions, electronic structure, and optical band gap of the frustrated antiferromagnet GeCo₂O₄
P. Pramanik, S. Ghosh, P. Yanda, D. C. Joshi, S. Pittala, A. Sundaresan, P. K. Mishra, S. Thota, and M. S. Seehra
Physical Review B. 99, 134422(2019)APS

Role of dilution on the electronic structure and magnetic ordering of spinel cobaltites
Sayandeep Ghosh, Sobhit Singh, Deep Chandra Joshi, Prativa Pramanik, Subhradip Ghosh, Pankaj Kumar Mishra, and Subhash Thota
Physical Review B 98,235119(2018)APS

Neutron diffraction study of the inverse spinels Co₂TiO₄ and Co₂SnO₄
S. Thota, M. Reehuis, A. Maljuk, et al.
Physical Review B 96(14),144104(2017)APS

Structural and magnetic properties of La_0.7Sr_0.3MnO₃/LaCoO₃ heterostructures
S. Thota, K. Roychowdhury, V. Thakare, S. C. Ganguli, Z. H. Chen, E. J. Guo and S. Das
Applied Physics Letters 113, 122405 (2018)AIP

Magnetic compensation, field-dependent magnetization reversal, and complex magnetic ordering in Co₂TiO₄
S. Nayak, S. Thota, D. C. Joshi, et al.
Physical Review B, 92, 214434 (2015) APS

On the nature of magnetic state in the spinel Co₂SnO₄
S. Thota, V. Narang, S. Nayak, S. Sambasivam, B.C. Choi, T. Sarkar, M. S. Andersson, R. Mathieu, and M. S. Seehra
Journal of Physics.: Condensed Matter, 27, 166001 (2015) IOP

Anisotropic magnetocaloric effect in all-ferromagnetic (La_0.7Sr_0.3MnO₃/SrRuO₃) superlattices
S. Thota, Q. Zhang,F. Guillou, U. Luders, W. Preellier, A. Wahl and P. Padhan
Applied Physics Letters, 97, 112506 [1-3], (2010)AIP

Synthesis and magnetic properties of nanocrystals of cubic defect spinel MgMnO₃
M.S. Seehra, V. Singh, S. Thota, B. Prasad and J. Kumar
Applied Physics Letters, 97, 112507 [1-3], (2010) AIP

Synthesis, Structure and Magnetic behaviour of Nanoparticles of Cubic ZnMnO₃
J. Rall, S. Thota, J. Kumar, and M. S. Seehra
Applied Physics Letters 100, 252407 (2012) AIP

A comparative study of magnetic properties of bulk and nanocrystalline Co₃O₄
P.Dutta, M.S.Seehra, S.Thota and J.Kumar
Journal of Physics Condesed Matter, 20, 015218[1-8](2008) IOP Citations > 110

On the sol-gel synthesis and thermal, structural, and magnetic studies of transition metal(Ni, Co, Mn) containing ZnO powders
S. Thota, T. Dutta and J. Kumar
Journal of Physics Condensed Matter, 18, 2473-86 (2006) IOP Cited by >100

The ac-magnetic susceptibility and dielectric response of complex spin-ordering process in Mn₃O₄
S. Thota, K. Patyal, S. Nayak, Ch. Simon, J. Kumar and W. Prellier
Journal of Applied Physics 116, 103906 (2014)AIP

Magnetic transitions in Mn₃O₄ and an anomaly at 38 K in magnetization and specific heat
F. Guillou, S. Thota, W. Preellier, J. Kumar and V. Hardy
Physics Review B, 83, 094423, (2011)APS

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