Signatures of spin-related phases in transport through regular polygons

被引:27
作者
Bercioux, D [1 ]
Frustaglia, D
Governale, M
机构
[1] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany
[2] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy
[3] Univ Naples Federico II, INFM, I-80126 Naples, Italy
[4] INFM, NEST, I-56126 Pisa, Italy
[5] Scuola Normale Super Pisa, I-56126 Pisa, Italy
来源
PHYSICAL REVIEW B | 2005年 / 72卷 / 11期
关键词
D O I
10.1103/PhysRevB.72.113310
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We address the subject of transport in one-dimensional ballistic polygon loops subject to Rashba spin-orbit coupling. We identify the role played by the polygon vertices in the accumulation of spin-related phases by studying interference effects as a function of the spin-orbit coupling strength. We find that the vertices act as strong spin-scattering centers that hinder the developing of Aharonov-Casher and Berry phases. In particular, we show that the oscillation frequency of the interference pattern can be doubled by modifying the shape of the loop from a square to a circle.
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页数:3
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