Semiclassical Dynamics and Nonlinear Charge Current

2019/02/21 by Yang Gao, Gao, Yang · 7 citations
Engineering · Physics and Astronomy · #FOS: Physical sciences #Mechanical and Optical Resonators #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Molecular Junctions and Nanostructures #Quantum and electron transport phenomena

paper · pdf · doi:10.48550/arxiv.1902.08592

openalex publication_date 2019/02/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

Electron conductivity is an important material property that can provide a wealth of information about the underlying system. Especially, the response of the conductivity with respect to electromagnetic fields corresponds to various nonlinear charge currents, which have distinct symmetry requirements and hence can be used as efficient probes of different systems. To help the band-structure engineering of such nonlinear currents, a universal treatment of electron dynamics up to second order expressed in the basis of the unperturbed states are highly useful. In this work, we review the general semiclassical framework of the nonlinear charge currents.

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