JB

Jatin Kumar Bidika

Auburn University, Indian Institute of Technology Madras

ORCID iD 0009-0009-6393-5966
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About

I am Dr. Jatin Kumar Bidika, a former postdoctoral research scholar at Auburn University, Alabama, USA. Prior to joining Auburn university, I was at Indian Institute of Technology Madras, India, where I did my PhD.

My research interest broadly lies in understanding the electronic, magnetic, and phononic properties of a wide range of quantum materials, such as strongly correlated perovskite oxide systems, transition metal dichalcogenides (TMDC), chiral materials, Heusler alloys, and ferroelectric materials. For this purpose, I employ the first principles electronic structure calculations within the framework of the density functional theory (DFT) and phenomenological Hamiltonian.

My PhD thesis primarily discusses the non-trivial magnetic exchange coupling in symmetry-lowered correlated electron oxides CaCu3B4O12 (CCBO). The notable outputs of my thesis are as
follows: (I) From the DFT calculations we examined the stabilization of A-site-ordered perovskites and
established the governing mechanism for G-type antiferromagnetic ordering of CCTiO and CCZrO. (II) By
estimating the spin exchange couplings, we investigated the magnetic transition from antiferromagnetic to
ferromagnetic phase of experimentally synthesized CaCu3(Ti1−xGex)4O12 and CaCu3(Ti1−xSnx)4O12
systems. Also, we developed a broader J1 −J2 −J3 phase diagram, which is yet to be established for a
vacancy ordered cubic lattice. (III) Interestingly, though CCNiO, CCPdO, CCPtO are isostructural, we
observed site dependent magnetism in these systems. For CCNiO, the Ni spins primarily magnetize in
ferromagnetic phase, whereas for CCPdO, both the Cu and Pd spins stabilize in ferromagnetic phase.
However, for CCPtO the Cu spins stabilize the system in antiferromagnetic phase. I have also involved in
examining a series of centrosymmetric TMDC systems, where a giant orbital Hall effect and tuneable spin
Hall effects are observed. In addition, I have worked collaboratively with various experimental groups on half-Heusler alloys, ferroelectric systems, and nanowire systems.


In recent times, circularly polarized lattice vibrations or chiral phonons have captivated widespread attention due to their interesting physical effect, such as phonon magnetic moment, electron valley scattering, generating an effective magnetic field, and coupling with electrons. On contrast to the linearly polarized phonons, the chiral phonons carry non-zero angular momentum. The chiral phonon emerges in a system with broken inversion symmetry. Interestingly, the mono layer transition metal dichalcogenides (TMDC) system lacks inversion symmetry, and they exhibit chiral phonons. During my postdoctoral tenure at Auburn University, I primarily explored the chiral phonon polarization of various monolayer TMDC materials.

Employment

  • Auburn University Postdoctoral Research Associate
    2025 - 2026

Education

  • Indian Institute of Technology Madras PhD
    2018 - 2025

Projects & Funding

Projects & funding information is unavailable.

Publications (7)