Localized magnetic states in Rashba dots

被引：19

作者：

Crisan, Mircea ^{[1
]}

Sanchez, David ^{[2
]}

Lopez, Rosa ^{[2
]}

Serra, Llorenc ^{[2
,3
]}

Grosu, Ioan ^{[1
]}

机构：

[1] Univ Cluj, Dept Theoret Phys, Cluj Napoca 3400, Romania

[2] Univ Illes Balears, Dept Fis, E-07122 Palma de Mallorca, Spain

[3] CSIC UIB, Inst Fis Interdisciplinar & Sistemas Complejos, E-07122 Palma de Mallorca, Spain

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 12期

关键词：

Anderson model; exchange interactions (electron); local moments; magnetic impurities; magnetisation; quantum dots; spin-orbit interactions; QUANTUM-DOT; SPINTRONICS; METALS;

D O I：

10.1103/PhysRevB.79.125319

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the formation of local moments in quantum dots arising in quasi-one-dimensional electron wires due to localized spin-orbit (Rashba) interaction. Using an Anderson-type model to describe the occurrence of the magnetic moments in these Rashba dots, we calculate the local magnetization within the mean-field approximation. We find that the magnetization becomes a nontrivial function of the Rashba coupling strength. We discuss both the equilibrium and nonequilibrium cases. Interestingly, we obtain a magnetic phase which is stable at large bias due to the Rashba interaction.

引用

页数：7

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