Aharonov-Bohm oscillations in the presence of strong spin-orbit interactions

被引：65
|
作者：
Grbic, Boris [1 ]
Leturcq, Renaud
Ihn, Thomas
Ensslin, Klaus
Reuter, Dirk
Wieck, Andreas D.
机构：
[1] ETH, Solid State Phys Lab, CH-8093 Zurich, Switzerland
[2] Ruhr Univ Bochum, D-44780 Bochum, Germany
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 17期
关键词：
D O I：
10.1103/PhysRevLett.99.176803
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have measured highly visible Aharonov-Bohm (AB) oscillations in a ring structure defined by local anodic oxidation on a p-type GaAs heterostructure with strong spin-orbit interactions. Clear beating patterns observed in the raw data can be interpreted in terms of a spin geometric phase. Besides h/e oscillations, we resolve the contributions from the second harmonic of AB oscillations and also find a beating in these h/2e oscillations. A resistance minimum at B = 0 T, present in all gate configurations, is the signature of destructive interference of the spins propagating along time-reversed paths.
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页数：4
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