Ensemble-Average Spectrum of Aharonov-Bohm Conductance Oscillations: Evidence for Spin-Orbit-Induced Berry's Phase

2 February 1998

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 80 (5) , 1050-1053
https://doi.org/10.1103/physrevlett.80.1050

Abstract

We have experimentally investigated Aharonov-Bohm conductance oscillations in two-dimensional rings in the presence of a strong Rashba spin-orbit interaction. The peak of the ensemble average spectrum corresponding to the

h / e

oscillations is split in several samples. We argue that the splitting originates from the geometric phase acquired by an electron spin under the influence of the spin-orbit interaction. Our results demonstrate how the ensemble average spectrum provides information otherwise not easily accessible.

Keywords

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