137 citations · 299 across the 14 of their papers we have counts for
8 papers · 1 filter
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…
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…
A thermodynamic probe of the topological phase transition in epitaxial graphene based Floquet topological insulator
Abhishek Kumar, Colin Benjamin
One can use light to tune certain materials, from a trivial to a topological phase. A prime example of such materials, classified as Floquet topological insulators (FTI), is epitax…
Non-Markovian resonance fluorescence
Abhishek Kumar
We derive a general formula for the non-Markovian fluorescence spectrum of a multi-level system interacting with a bosonic environment. To this end, we apply linear-response theory…
Linear Response Theory and Optical Conductivity of Floquet Topological Insulators
Abhishek Kumar, M. Rodriguez-Vega, T. Pereg-Barnea +1
Motivated by the quest for experimentally accessible dynamical probes of Floquet topological insulators, we formulate the linear response theory of a periodically driven system. We…
Higher-order Floquet topological phases with corner and bulk bound states
Martin Rodriguez-Vega, Abhishek Kumar, Babak Seradjeh
We report the theoretical discovery and characterization of higher-order Floquet topological phases dynamically generated in a periodically driven system with mirror symmetries. We…