Transport spin polarization in SrRuO3 measured through point-contact Andreev reflection -: art. no. 020411

被引：57

作者：

Raychaudhuri, P

Mackenzie, AP

Reiner, JW

Beasley, MR

机构：

[1] Univ St Andrews, Dept Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

[2] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[3] Stanford Univ, Edward L Ginzton Labs, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW B | 2003年 / 67卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.67.020411

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a study in which Andreev reflection using a Nb point contact is used to measure the transport spin polarization of the 4d itinerant ferromagnet SrRuO3 in the ballistic limit of transport. The degree of transport spin polarization is comparable to that of the hole-doped rare-earth manganites. We conclude that the large transport spin polarization results mainly from a difference in the Fermi velocities between the majority- and minority-spin channels in this material.

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页数：4

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