14 citations · 19 across the 16 of their papers we have counts for
8 papers · 1 filter
Quantum Transport Spectroscopy of Pseudomagnetic Field in Graphene
Divya Sahani, Sunit Das, Kenji Watanabe +3
Nonuniform strain in graphene acts as a valley-dependent gauge field, generating pseudomagnetic fields (PMFs) that mimic real magnetic fields but preserve global time-reversal symm…
Deterministic Switching in Altermagnets via Asymmetric Sublattice Spin Current
Sayan Sarkar, Sunit Das, Amit Agarwal
We demonstrate a deterministic switching mechanism in collinear altermagnets driven by asymmetric sublattice spin currents. Unlike conventional antiferromagnets, where combined par…
Spin band geometry drives intrinsic thermal spin magnetization and current
Sankar Sarkar, Harsh Varshney, Sayan Sarkar +1
Generating spin magnetization and spin currents without magnetic or electric fields is a key frontier in spin caloritronics. Spin responses driven by thermal gradients offer a prom…
Quantum metric induced nonlinear thermal noise in PT-symmetric antiferromagnets
Dibyanandan Bhowmick, Amit Agarwal
Electrical current fluctuations provide a powerful and unconventional probe of band geometry in quantum materials. In particular, intrinsic noise components that are independent of…
Disorder-driven Weyl-Kondo Semimetal Phase in WTe
Arpan Manna, Sunit Das, Amit Agarwal +1
In this Letter, we report the observation of disorder-driven anisotropic Kondo screening and spontaneous Hall effect in bulk WTe, a nonmagnetic type-II Weyl semimetal. We sho…
Odd-parity longitudinal magnetoconductivity in time-reversal symmetry broken materials
Sunit Das, Akash Adhikary, Divya Sahani +2
Magnetotransport measurements are a sensitive probe of symmetry and electronic structure in quantum materials. While conventional metals exhibit longitudinal magnetoconductivity th…
Spin-split magnon bands induce pure spin current in insulating altermagnets
Sankar Sarkar, Amit Agarwal
Altermagnets offer a promising platform for dissipationless spin transport by combining zero net magnetization with spontaneous non-relativistic spin splitting. However, their magn…
Symmetry-driven Intrinsic Nonlinear Pure Spin Hall Effect
Sayan Sarkar, Sunit Das, Amit Agarwal
The generation of pure spin current, spin angular momentum transport without charge flow, is crucial for developing energy-efficient spintronic devices with minimal Joule heating.…