Quenching of magnetoresistance by hot electrons in magnetic tunnel junctions

被引：487

作者：

Zhang, S ^{[1
]}

Levy, PM ^{[1
]}

Marley, AC ^{[1
]}

Parkin, SSP ^{[1
]}

机构：

[1] IBM CORP,ALMADEN RES CTR,DIV RES,SAN JOSE,CA 95120

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.79.3744

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A zero bias anomaly is observed at low temperatures in the current-voltage characteristics of ferromagnetic tunnel junctions; the drop in the junction resistance with increasing bias voltage is greater for antiparallel alignment of the magnetic moments of the magnetic electrodes than for parallel alignment. The resulting decrease in the magnetoresistance of the junction is accounted for by spin excitations localized at the interfaces between the magnetic electrodes and the tunnel barrier. [S0031-9007(97)04443-8].

引用

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页码：3744 / 3747

页数：4

相关论文

共 19 条

[1] ZERO BIAS ANOMALY IN TUNNEL RESISTANCE AND ELECTRON-ELECTRON INTERACTION [J].

ALTSHULER, BL ;

ARONOV, AG .

SOLID STATE COMMUNICATIONS, 1979, 30 (03) :115-117

[2] EXCHANGE MODEL OF ZERO-BIAS TUNNELING ANOMALIES [J].

APPELBAUM, JA .

PHYSICAL REVIEW, 1967, 154 (03) :633-+

[3] TUNNELLING FROM A MANY-PARTICLE POINT OF VIEW [J].

BARDEEN, J .

PHYSICAL REVIEW LETTERS, 1961, 6 (02) :57-&

[4] THEORY OF SPIN POLARIZATION OF FIELD-EMITTED ELECTRONS FROM NICKEL [J].

CHAZALVIEL, JN ;

YAFET, Y .

PHYSICAL REVIEW B, 1977, 15 (02) :1062-1071

[5] TUNNELING THEORY WITHOUT TRANSFER-HAMILTONIAN FORMALISM .2. RESONANT AND INELASTIC TUNNELING ACROSS A JUNCTION OF FINITE WIDTH [J].

FEUCHTWANG, TE .

PHYSICAL REVIEW B, 1974, 10 (10) :4135-4150

[6] TUNNELING THEORY WITHOUT TRANSFER-HAMILTONIAN FORMALISM .1. [J].

FEUCHTWANG, TE .

PHYSICAL REVIEW B, 1974, 10 (10) :4121-4134

[7] Microstructured magnetic tunnel junctions [J].

Gallagher, WJ ;

Parkin, SSP ;

Lu, Y ;

Bian, XP ;

Marley, A ;

Roche, KP ;

Altman, RA ;

Rishton, SA ;

Jahnes, C ;

Shaw, TM ;

Xiao, G .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) :3741-3746

[8] SUPERCONDUCTIVITY OF SMALL TIN PARTICLES MEASURED BY TUNNELING [J].

GIAEVER, I ;

ZELLER, HR .

PHYSICAL REVIEW LETTERS, 1968, 20 (26) :1504-&

[9] SPIN-DEPENDENT TUNNELLING FROM TRANSITION-METAL FERROMAGNETS [J].

HERTZ, JA ;

AOI, K .

PHYSICAL REVIEW B, 1973, 8 (07) :3252-3256

[10] TUNNELING BETWEEN FERROMAGNETIC-FILMS [J].

JULLIERE, M .

PHYSICS LETTERS A, 1975, 54 (03) :225-226