Origin of spin-polarization decay in point-contact Andreev reflection

被引：48

作者：

Kant, CH

Kurnosikov, O

Filip, AT

LeClair, P

Swagten, HJM

de Jonge, WJM

机构：

[1] Eindhoven Univ Technol, Ctr Nanomat, Dept Appl Phys, NL-5600 MB Eindhoven, Netherlands

[2] Eindhoven Univ Technol, COBRA Res Inst, NL-5600 MB Eindhoven, Netherlands

来源：

PHYSICAL REVIEW B | 2002年 / 66卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.66.212403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have performed point contact Andreev reflection measurements with a view to study the correlation between measured spin polarization and the interface scattering parameter Z extracted from fits of the modified Blonder-Tinkham-Klapwijk model to the conductance-voltage curves of superconductor/ferromagnet point contacts. A simple model describing spin-flip scattering in the interface region identifies Z(2) as the effective scattering parameter and predicts that the spin polarization decays exponentially with Z(2), in agreement with experimental data.

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页码：1 / 4

页数：4

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