ON THE ROLE OF SPIN-DEPENDENT ELECTRON POTENTIALS IN GIANT MAGNETORESISTANCE IN MAGNETIC MULTILAYERS

被引：9

作者：

BARNAS, J

机构：

[1] A. Mickiewicz Univ, Poznan, Poland

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1994年 / 131卷 / 1-2期

关键词：

D O I：

10.1016/0304-8853(94)90004-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of spin-dependent electron and impurity potentials on in-plane transport properties of magnetic layered structures is analysed theoretically within the Kubo formalism. The effective electron potential in the ferromagnetic films as well as the impurity scattering potential are assumed to be spin-dependent. The giant magnetoresistance (GMR) effect occurs when there is a spin-asymmetry in relaxation times. The dependence of GMR on the spin-asymmetry of the effective electron potential is analysed in detail for a simple bilayer structure. It is shown that GMR decreases with increasing spin-splitting of the electron band and vanishes when the magnet turns to a one spin-subband ferromagnet.

引用

收藏

页码：L14 / L18

页数：5

相关论文

共 16 条

[1] GIANT MAGNETORESISTANCE OF (001)FE/(001) CR MAGNETIC SUPERLATTICES [J].

BAIBICH, MN ;

BROTO, JM ;

FERT, A ;

VANDAU, FN ;

PETROFF, F ;

EITENNE, P ;

CREUZET, G ;

FRIEDERICH, A ;

CHAZELAS, J .

PHYSICAL REVIEW LETTERS, 1988, 61 (21) :2472-2475

[2] NOVEL MAGNETORESISTANCE EFFECT IN LAYERED MAGNETIC-STRUCTURES - THEORY AND EXPERIMENT [J].

BARNAS, J ;

FUSS, A ;

CAMLEY, RE ;

GRUNBERG, P ;

ZINN, W .

PHYSICAL REVIEW B, 1990, 42 (13) :8110-8120

[3] THEORY OF THE MAGNETORESISTANCE IN MAGNETIC MULTILAYERS - ANALYTICAL EXPRESSIONS FROM A SEMICLASSICAL APPROACH [J].

BARTHELEMY, A ;

FERT, A .

PHYSICAL REVIEW B, 1991, 43 (16) :13124-13129

[4]

BINASCH G, 1989, PHYS REV B, V39, P4824

[5]

BULKA B, IN PRESS ACTA PHYS P

[6] NOVEL RESULTS FOR QUASI-CLASSICAL LINEAR TRANSPORT IN METALLIC MULTILAYERS [J].

CAMBLONG, HE ;

LEVY, PM .

PHYSICAL REVIEW LETTERS, 1992, 69 (19) :2835-2838

[7] THEORY OF GIANT MAGNETORESISTANCE EFFECTS IN MAGNETIC LAYERED STRUCTURES WITH ANTIFERROMAGNETIC COUPLING [J].

CAMLEY, RE ;

BARNAS, J .

PHYSICAL REVIEW LETTERS, 1989, 63 (06) :664-667

[8] CLASSICAL-THEORY OF GIANT MAGNETORESISTANCE IN SPIN-VALVE MULTILAYERS - INFLUENCE OF THICKNESSES, NUMBER OF PERIODS, BULK AND INTERFACIAL SPIN-DEPENDENT SCATTERING [J].

DIENY, B .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1992, 4 (40) :8009-8020

[9] PERPENDICULAR GIANT MAGNETORESISTANCE OF MICROSTRUCTURED FE/CR MAGNETIC MULTILAYERS FROM 4.2 TO 300 K [J].

GIJS, MAM ;

LENCZOWSKI, SKJ ;

GIESBERS, JB .

PHYSICAL REVIEW LETTERS, 1993, 70 (21) :3343-3346

[10] BOLTZMANN-EQUATION APPROACH TO THE NEGATIVE MAGNETORESISTANCE OF FERROMAGNETIC - NORMAL-METAL MULTILAYERS [J].

HOOD, RQ ;

FALICOV, LM .

PHYSICAL REVIEW B, 1992, 46 (13) :8287-8296