Quantum Dynamics of Pseudospin Solitons in Double-Layer Quantum Hall Systems

TL;DR

This paper investigates the behavior of pseudospin solitons in double-layer quantum Hall systems, focusing on their depinning mechanisms, low-temperature dynamics, and experimental detection methods.

Contribution

It provides estimates of depinning temperatures, calculates tunneling rates, and discusses observable signatures of solitons in spectral functions.

Findings

Depinning occurs below a certain temperature via tunneling.

Calculated low-temperature depinning rates for realistic geometries.

Identified local charge, current density changes, and spectral signatures for soliton detection.

Abstract

Pseudospin solitons in double-layer quantum Hall systems can be introduced by a magnetic field component coplanar with the electrons and can be pinned by applying voltages to external gates. We estimate the temperature below which depinning occurs predominantly via tunneling and calculate low-temperature depinning rates for realistic geometries. We discuss the local changes in charge and current densities and in spectral functions that can be used to detect solitons and observe their temporal evolution.