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

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.

4 pages, 3 figures, RevTex4, to appear in PRB

References in corpus (2)

• Electrical initialization and manipulation of electron spins in an L-shaped strained n-InGaAs channel
• Spin Density Matrix of Spin-3/2 Hole Systems

Cited by in corpus (3)

• 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