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Quantum Beating in Ring Conductance: Observation of Spin Chiral States and Berry's phase

M. J. Yang·C. H. Yang·K. A. Cheng·Y. B. Lyanda-Geller
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Abstract

Using singly connected rings with a collimating contact to current leads, we have observed the spin quantum beating in the Aharonov-Bohm conductance oscillations. We demonstrate that the beating is a result of the superposition of two independent interference patterns associated with two orthogonal spin chiral states arising from intrinsic spin-orbit interactions. Our work provides the conclusive evidence of the spin Berry's phase in the conductance of quantum rings.

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M. J. Yang, C. H. Yang, K. A. Cheng, Y. B. Lyanda-Geller. 2002-08-15. Quantum Beating in Ring Conductance: Observation of Spin Chiral States and Berry's phase. https://arxiv.org/abs/cond-mat/0208260

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