159 citations · 867 across the 20 of their papers we have counts for
7 papers · 1 filter
Quantum Kinetic Theory of Nonlinear Optical Currents: Finite Fermi surface and Fermi sea contributions
Pankaj Bhalla, Kamal Das, Amit Agarwal +1
The quantum kinetic framework provides a versatile method for investigating the dynamical optical and transport currents of crystalline solids. In this paper, starting from the den…
Quantum kinetic theory of nonlinear thermal current
Harsh Varshney, Kamal Das, Pankaj Bhalla +1
We investigate the second-order nonlinear electronic thermal transport induced by temperature gradient. We develop the quantum kinetic theory framework to describe thermal transpor…
Intrinsic nonlinear conductivities induced by the quantum metric
Kamal Das, Shibalik Lahiri, Rhonald Burgos Atencia +2
The second-order nonlinear current originates from three physical mechanisms: extrinsic nonlinear Drude and Berry curvature dipole and intrinsic Berry connection polarizability. He…
Nonlinear anomalous Hall effects probe topological phase-transitions in twisted double bilayer graphene
Atasi Chakraborty, Kamal Das, Subhajit Sinha +3
Nonlinear anomalous Hall effect is the Berry curvature dipole induced second-order Hall voltage or temperature difference in response to a longitudinal electric field or temperatur…
Nonlinear magnetoconductivity in Weyl and multi-Weyl semimetal in quantizing magnetic field
Sunit Das, Kamal Das, Amit Agarwal
Magnetotransport and magneto-optics experiments offer a very powerful probe for studying the physical properties of materials. Here, we investigate the second-order nonlinear magne…
Berry curvature dipole senses topological transition in a moiré superlattice
Subhajit Sinha, Pratap Chandra Adak, Atasi Chakraborty +8
Topological aspects of electron wavefunction play a crucial role in determining the physical properties of materials. Berry curvature and Chern number are used to define the topolo…