137 citations · 299 across the 14 of their papers we have counts for
14 papers
Phonon-Induced Collective Modes in Spin-Orbit Coupled Polar Metals
Abhishek Kumar, Premala Chandra, Pavel A. Volkov
We study the interplay between collective electronic and lattice modes in polar metals in an applied magnetic field aligned with the polar axis. Static spin-orbit coupling leads to…
Impurity reveals distinct operational phases in quantum thermodynamic cycles
Aditya Prakash, Abhishek Kumar, Colin Benjamin
We analyze the effect of impurity on the work output and efficiency of quantum Otto and quantum Carnot heat cycles, modeled as a single quantum particle in an infinite square well…
Anomalous pumping in the non-Hermitian Rice-Mele model
Abhishek Kumar, Sarbajit Mazumdar, S D Mahanti +1
We study topological charge pumping (TCP) in the Rice-Mele (RM) model with irreciprocal hopping. The non-Hermiticity gives rise to interesting pumping physics, owing to the presenc…
Spin-Phonon Resonances in Nearly Polar Metals with Spin-Orbit Coupling
Abhishek Kumar, Premala Chandra, Pavel A. Volkov
In metals in the vicinity of a polar transition, interactions between electrons and soft phonon modes remain to be determined. Here we explore the consequences of spin-orbit assist…
Zero-field spin resonance in graphene with proximity-induced spin-orbit coupling
Abhishek Kumar, Saurabh Maiti, Dmitrii L. Maslov
We investigate collective spin excitations in graphene with proximity-induced spin-orbit coupling (SOC) of the Rashba and valley-Zeeman types, as it is the case, e.g., for graphene…
Floquet Gauge Pumps as Sensors for Spectral Degeneracies Protected by Symmetry or Topology
Abhishek Kumar, Gerardo Ortiz, Philip Richerme +1
We introduce the concept of a Floquet gauge pump whereby a dynamically engineered Floquet Hamiltonian is employed to reveal the inherent degeneracy of the ground state in interacti…