Valence band structure, edge states and interband absorption in Quantum Well Wires in high magnetic fields

TL;DR

This paper provides a theoretical analysis of the valence band structure, edge states, and interband absorption in quantum well wires under high magnetic fields, highlighting complex hole mixing effects and optical signatures.

Contribution

It introduces a detailed theoretical model of magnetic band structures in quantum well wires, emphasizing the impact of hole mixing on edge states and optical transitions.

Findings

Complex behavior of valence edge states due to hole mixing

Optical experiments can distinguish between subbands, edge states, and Landau levels

Polarization-dependent absorption reveals confinement details

Abstract

We present a theoretical study of the magnetic band structure of conduction and valence states in Quantum Well Wires in high magnetic fields. We show that hole mixing results in a very complex behavior of valence edge states with respect to conduction states, a fact which is likely to be important in magneto-transport in the Quantum Hall regime. We show how the transition from one-dimensional subbands to edge states and to Landau levels can be followed by optical experiments by choosing the appropriate, linear or circular, polarization of the light, yielding information on the one-dimensional confinement.