Photon-induced vanishing of magnetoconductance in 2D electrons on liquid He

TL;DR

This paper reports a new optical phenomenon where photon-induced excitation causes vanishing magnetoconductance in 2D electrons on liquid helium, indicating possible radiation-induced zero-resistance states.

Contribution

It introduces a novel optical pumping method that induces vanishing magnetoconductance in 2D electron systems on helium, revealing new quantum transport phenomena.

Findings

Observation of vanishing longitudinal conductivity sigma_xx

Evidence suggesting radiation-induced zero-resistance states

Photon-induced excitation affects electron transport in 2D helium electrons

Abstract

We report on a novel transport phenomenon realized by optical pumping in surface state electrons on helium subjected to perpendicular magnetic fields. The electron dynamics is governed by the photon-induced excitation and scattering-mediated transitions between electric subbands. In a range of magnetic fields, we observe vanishing longitudinal conductivity sigma_xx. Our result suggests the existence of radiation-induced zero-resistance states in the nondegenerate 2D electron system.