Ballistic versus diffusive magnetoresistance of a magnetic point contact

被引：37

作者：

Tagirov, LR ^{[1
]}

Vodopyanov, BP

Efetov, KB

机构：

[1] Kazan State Univ, Kazan 420008, Russia

[2] RAS, Kazan Physicotech Inst, Kazan 420029, Russia

[3] Ruhr Univ Bochum, D-44780 Bochum, Germany

[4] LD Landau Theoret Phys Inst, Moscow 117940, Russia

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.63.104428

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The quasiclassical theory of a nanosize point contacts (PC's) between two ferromagnets is developed. The maximum available magnetoresistance values in PC's are calculated for ballistic Versus diffusive transport through the area of a contact. Ln the ballistic regime the magnetoresistance in excess of a few hundred percent is obtained for the iron-group ferromagnets. The necessary conditions for realization of so large a magnetoresistance in PC's, and the experimental results by Garcia et nl. are discussed.

引用

页码：1044281 / 1044284

页数：4

共 21 条

[1]

[Anonymous], ZH EKSP TEOR FIZ

[2] Perpendicular transport of spin-polarized electrons through magnetic nanostructures [J].