Aharonov-Bohm Oscillations with Spin: Evidence for Berry’s Phase

Jeng Bang Yau, E. P. De Poortere, M. Shayegan

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

We report a study of the Aharonov-Bohm effect, the oscillations of the resistance of a mesoscopic ring as a function of a perpendicular magnetic field, in a GaAs two-dimensional hole system with a strong spin-orbit interaction. The Fourier spectra of the oscillations reveal extra structure near the main peak whose frequency corresponds to the magnetic flux enclosed by the ring. A comparison of the experimental data with results of simulations demonstrates that the origin of the extra structure is the geometric (Berry) phase acquired by the carrier spin as it travels around the ring.

Original languageEnglish (US)
Number of pages1
JournalPhysical review letters
Volume88
Issue number14
DOIs
StatePublished - Jan 1 2002

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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