Strong Aharonov-Bohm oscillations in GaAs two-dimensional holes

Details Strong Aharonov-Bohm oscillations in GaAs two-dimensional holes Strong Aharonov-Bohm oscillations in GaAs two-dimensional holes

2006-12-27

arxiv.org/abs/cond-mat/0612638v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures; accepted in Applied Physics Letters

Scientific paper

We measured Aharonov-Bohm resistance oscillations in a shallow two-dimensional GaAs hole ring structure, defined by local anodic surface oxidation. The amplitude of the oscillations is about 10% of the ring resistance, the strongest seen in a hole system. In addition we observe resistance oscillations as a function of front gate bias at zero magnetic field. We discuss the results in light of spin interference in the ring and possible applications to spintronics.

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