Numerical study of magnetoresistance in ferromagnetic tunnel junctions

被引：18

作者：

Itoh, H ^{[1
]}

Kumazaki, T

Inoue, J

Maekawa, S

机构：

[1] Nagoya Univ, Dept Quantum Engn, Nagoya, Aichi 4648603, Japan

[2] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648603, Japan

[3] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1998年 / 37卷 / 10期

关键词：

tunnel junction; magnetoresistance; randomness; linear response theory; numerical simulation;

D O I：

10.1143/JJAP.37.5554

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effects of randomness at interfaces on the tunnel conductance and tunnel magnetoresistance (TMR) are studied by numerical simulations ar:a zero bias limit and zero temperature. We use the Kubo formula with the recursive Green's function technique for finite-size clusters. it is shown that this method is effective for calculating the tunnel conductance and TMR except for cases where the tunnel conductance is extremely small. This type of simulation may be a useful method for studying the conductance of systems with arbitrary randomness.

引用

页码：5554 / 5559

页数：6

共 27 条

[1] GIANT MAGNETORESISTANCE IN MAGNETIC GRANULAR ALLOYS [J].

ASANO, Y ;

OGURI, A ;

INOUE, J ;

MAEKAWA, S .

PHYSICAL REVIEW B, 1994, 49 (18) :12831-12834

[2] 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

[3] ELECTRICAL LINEAR-RESPONSE THEORY IN AN ARBITRARY MAGNETIC-FIELD - A NEW FERMI-SURFACE FORMATION [J].

BARANGER, HU ;

STONE, AD .

PHYSICAL REVIEW B, 1989, 40 (12) :8169-8193

[4] Tunneling of electrons in conventional and half-metallic systems: Towards very large magnetoresistance [J].

Bratkovsky, AM .

PHYSICAL REVIEW B, 1997, 56 (05) :2344-2347

[5] 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

[6] THEORY OF GIANT MAGNETORESISTANCE IN METALLIC SUPERLATTICES [J].

INOUE, J ;

OGURI, A ;

MAEKAWA, S .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1991, 60 (02) :376-379

[7] ELECTRONIC-STRUCTURE AND TRANSPORT-PROPERTIES IN MAGNETIC SUPERLATTICES [J].

ITOH, H ;

INOUE, J ;

MAEKAWA, S .

PHYSICAL REVIEW B, 1993, 47 (10) :5809-5818

[8] THEORY OF GIANT MAGNETORESISTANCE FOR PARALLEL AND PERPENDICULAR CURRENTS IN MAGNETIC MULTILAYERS [J].

ITOH, H ;

INOUE, J ;

MAEKAWA, S .

PHYSICAL REVIEW B, 1995, 51 (01) :342-352

[9]

ITOH H, UNPUB PHYS REV B

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

JULLIERE, M .

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

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