Anisotropic Zeeman splitting in ballistic one-dimensional hole systems

Details Anisotropic Zeeman splitting in ballistic one-dimensional hole systems Anisotropic Zeeman splitting in ballistic one-dimensional hole systems

2006-07-14

arxiv.org/abs/cond-mat/0607357v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Submitted for publication in AIP Proceedings for the 28th International Conference on the Physics of Semiconductors (ICPS 28),

Scientific paper

10.1063/1.2730082

We have studied the effect of an in-plane magnetic field B on a one-dimensional hole system in the ballistic regime created by surface gate confinement. We observed clearly the lifting of the spin degeneracy due to the Zeeman effect on the one dimensional subbands for B applied parallel to the channel. In contrast, no Zeeman splitting is detected for B applied perpendicular to the channel, revealing an extreme anisotropy of the effective Lande g-factor g*. We demonstrate that this anisotropy is a direct consequence of the one-dimensional confinement on a system with strong spin-orbit coupling.

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