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Spin-Landau Orbit Coupling in Units of the Flux Quantum Observed from Zeeman Splitting of a Quantum Wire Array

J. C. Woo·W. S. Kim·H. S. Ko·Y. A. Leem·Y. S. Kim·D. S. Kim·M. Y. Choi·D. H. Kim·T. Schmiedel
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Abstract

In Zeeman spectra of a GaAs-AlGaAs quantum wire array with superlattice period lp, the zero-field shift is found to increase in steps of (2 pi hbar/ e)lp^{-2} at the cyclotron radius Rc ~lp, lp/2, and lp/3. This shift, caused by spin-Landau orbit coupling and quantized in units of the flux quantum 2 pi hbar /e,is a manifestation of the gauge invariance, and the first observation of the flux quantization in a non-superconducting material.The quantum interference associated with the phase difference in the quantum barrier scattering is also reported.

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J. C. Woo, W. S. Kim, H. S. Ko, Y. A. Leem, Y. S. Kim, D. S. Kim, M. Y. Choi, D. H. Kim, T. Schmiedel. 1998-04-14. Spin-Landau Orbit Coupling in Units of the Flux Quantum Observed from Zeeman Splitting of a Quantum Wire Array. https://arxiv.org/abs/cond-mat/9804135

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