ORIGIN OF ENHANCED MAGNETORESISTANCE OF MAGNETIC MULTILAYERS - SPIN-DEPENDENT SCATTERING FROM MAGNETIC INTERFACE STATES

被引：357

作者：

PARKIN, SSP

机构：

[1] IBM Research Division, Almaden Research Center, San Jose, CA 95120

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.71.1641

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The origin of giant magnetoresistance exhibited by ferromagnetic/nonmagnetic multilayered structures is examined by inserting thin layers of a second ferromagnetic material at the interfaces in ferromagnetic/nonmagnetic/ferromagnetic sandwiches. It is generally observed, for many different combinations of metals, that the magnetoresistance depends exponentially on the thickness of the interface layer, with a characteristic length, xi. Xi is extremely short and is typically just congruent-to 1.5 to 3 angstrom at room temperature. At lower temperatures xi becomes even shorter. The giant magnetoresistance effect is thus clearly shown to be determined by the character of the ferromagnetic/nonmagnetic interfaces.

引用

页码：1641 / 1644

页数：4

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