Photoluminescence signature of skyrmions at \nu = 1

TL;DR

This paper theoretically investigates the photoluminescence spectra of quantum Hall states near , revealing how skyrmions influence the polarization-dependent spectral features and their dependence on the electron g factor.

Contribution

It provides a theoretical analysis of the photoluminescence signatures of skyrmions at , highlighting polarization and g-factor effects in quantum Hall states.

Findings

LCP and RCP lines characterize the spectrum near .

The spectrum's mean energy is g-factor independent for spin-1/2 quasielectrons.

The red shift of the LCP line for <1 depends on skyrmion properties.

Abstract

The photoluminescence spectrum of quantized Hall states near filling factor \nu = 1 is investigated theoretically. For \nu >= 1 the spectrum consists of a right-circularly polarized (RCP) line and a left-circularly polarized (LCP) line, whose mean energy: (1) does not depend on the electron g factor for spin-1/2 quasielectrons, (2) does depend on g for charged spin-texture excitations (skyrmions). For \nu < 1 the spectrum consists of a LCP line shifted down in energy from the LCP line at \nu >= 1. The g-factor dependence of the red shift of the LCP line determines the nature of the negatively charged excitations.