Zeeman splitting in ballistic hole quantum wires

Abstract

We have studied the Zeeman splitting in ballistic hole quantum wires formed in a (311)A quantum well by surface gate confinement. Transport measurements clearly show lifting of the spin degeneracy and crossings of the subbands when an in-plane magnetic field B is applied parallel to the wire. When B is oriented perpendicular to the wire, no spin-splitting is discernible up to B = 8.8 T. The observed large Zeeman splitting anisotropy in our hole quantum wires demonstrates the importance of quantum-confinement for spin-splitting in nanostructures with strong spin-orbit coupling.

References in corpus (1)

• Anomalous Spin Polarization of GaAs Two-Dimensional Hole Systems

Cited by in corpus (11)

• Probing the microscopic structure of bound states in quantum point contacts
• Spin-3/2 physics of semiconductor hole nanowires: Valence-band mixing and tunable interplay between bulk-material and orbital bound-state spin splittings
• Large variations in the hole spin splitting of quantum-wire subband edges
• 0.7 Structure and Zero Bias Anomaly in Ballistic Hole Quantum Wires
• Anisotropic modification of the effective hole $g$-factor by electrostatic confinement
• Enhanced Zeeman splitting in Ga0.25In0.75As quantum point contacts
• Interplay between one-dimensional confinement and crystallographic anisotropy in ballistic hole quantum wires
• Lande-like formula for the g factors of hole-nanowire subband edges
• Hole spin relaxation in $p$-type GaAs quantum wires
• Tailoring hole spin splitting and polarization in nanowires
• Electron spin relaxation in n-type InAs quantum wires