Large variations in the hole spin splitting of quantum-wire subband edges

2007/03/31 by Dan Csontos, D. Csontos, U. Zülicke +1 · 3 citations
Chemistry · Physics and Astronomy · #Chemistry #Condensed matter physics #Electron #Filling factor #Magnetic field #Physics #Polarization (electrochemistry) #Quantum #Quantum and electron transport phenomena #Quantum mechanics #Quantum wire #Semiconductor Quantum Structures and Devices #Spin (aerodynamics) #Spin polarization #Surface and Thin Film Phenomena #Zeeman effect #Zero field splitting #cond-mat.mes-hall #cond-mat.mtrl-sci

paper · pdf · doi:10.1103/physrevb.76.073313

published as Phys. Rev. B 76, 073313 (2007) · 4 pages, 3 figures, RevTex4, to appear in PRB

arxiv created 2007/08/13 · openalex publication_date 2007/08/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We study Zeeman splitting of zone-center subband edges in a cylindrical hole wire subject to a magnetic field parallel to its axis. The g factor turns out to fluctuate strongly as a function of wire subband index, assuming values that differ substantially from those found in higher-dimensional systems. We analyze the spin properties of hole-wire states using invariants of the spin-3∕2 density matrix and find a strong correlation between g-factor value and the profile of hole spin-polarization density. Our results suggest possibilities for confinement engineering of hole spin splittings.

Citations

• Electrical initialization and manipulation of electron spins in an L-shaped strained n-InGaAs channel
• Spin density matrix of spin-32hole systems

Cited by

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• Fabrication and characterization of an induced GaAs single hole transistor
• Observation of orientation- andk-dependent Zeeman spin-splitting in hole quantum wires on (100)-oriented AlGaAs/GaAs heterostructures