Zeeman splitting in ballistic hole quantum wires
- Danneau, R
- Klochan, O
- Clarke, WR
- Ho, LH
- Micolich, AP
- Simmons, MY
- Hamilton, AR
- Pepper, M
- Ritchie, DA
- Zulicke, U
Publication date
July 2006
DOI Publisher
American Physical Society (APS) ISSN
0031-9007 Citation count (estimate)
36Abstract
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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