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arXiv · 1301.3992

Anisotropic Zeeman splitting in p-type GaAs quantum point contacts

Y. Komijani·M. Csontos·I. Shorubalko·U. Zuelicke·T. Ihn·K. Ensslin·D. Reuter·A. D. Wieck
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Abstract

Low-temperature electrical conductance spectroscopy measurements of quantum point contacts implemented in p-type GaAs/AlGaAs heterostructures are used to study the Zeeman splitting of 1D subbands for both in-plane and out-of-plane magnetic field orientations. The resulting in-plane g-factors agree qualitatively with those of previous experiments on quantum wires while the quantitative differences can be understood in terms of the enhanced quasi-1D confinement anisotropy. The influence of confinement potential on the anisotropy is discussed and an estimate for the out-of-plane g-factor is obtained which, in contrast to previous experiments, is closer to the theoretical prediction.

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Y. Komijani, M. Csontos, I. Shorubalko, U. Zuelicke, T. Ihn, K. Ensslin, D. Reuter, A. D. Wieck. 2013-01-17. Anisotropic Zeeman splitting in p-type GaAs quantum point contacts. https://doi.org/10.1209/0295-5075%2F102%2F37002

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