[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.