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

D. Csontos·U. Zuelicke
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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.

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D. Csontos, U. Zuelicke. 2007-08-13. Large variations in the hole spin splitting of quantum-wire subband edges. https://doi.org/10.1103/physrevb.76.073313

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