Decoherence of spin states induced by Rashba spin-orbit coupling

被引：5
|
作者：
Poszwa, A. [1 ]
机构：
[1] Univ Warmia & Mazury, Fac Math & Comp Sci, Ul Sloneczna 54, PL-10710 Olsztyn, Poland
来源：
PHYSICA SCRIPTA | 2018年 / 93卷 / 02期
关键词：
spin-orbit coupling; quantum wire; quantum decoherence; MAJORANA FERMIONS; SUPERCONDUCTOR; NANOWIRE; CONDUCTANCE; SIGNATURE; GAP;
D O I：
10.1088/1402-4896/aa9ae0
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the spin-orbit (SO) coupling effect on phase coherence of spin states for electrons confined to one-dimensional nanowires (NWs). It has been shown that SO interactions destroy coherent superpositios of spin states leading to states with nonzero entropy. Relationships between the von Neumann entropy and experimental characteristics of the spin are investigated for a single-and two electron systems. The dependence of a degree of decoherence on the Rashba coupling constant is determined analytically. New aspects of transport properties of a quasi-one-dimensional NW have been also studied.
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收藏
页数：9
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