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Zeeman splitting in ballistic hole quantum wires

R. Danneau·O. Klochan·W. R. Clarke·L. H. Ho·A. P. Micolich·M. Y. Simmons·A. R. Hamilton·M. Pepper·D. A. Ritchie·U. Zuelicke
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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.

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R. Danneau, O. Klochan, W. R. Clarke, L. H. Ho, A. P. Micolich, M. Y. Simmons, A. R. Hamilton, M. Pepper, D. A. Ritchie, U. Zuelicke. 2006-07-14. Zeeman splitting in ballistic hole quantum wires. https://doi.org/10.1103/physrevlett.97.026403

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