Spin injection across a heterojunction: A ballistic picture

被引：104

作者：

Hu, CM

Matsuyama, T

机构：

[1] Univ Hamburg, Inst Angew Phys, D-20355 Hamburg, Germany

[2] Univ Hamburg, Zentrum Mikrostrukturforsch, D-20355 Hamburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.87.066803

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Spin injection across heterojunctions plays a decisive role in the new field of spintronics. Within the ballistic transport regime, we state a general expression for the spin-injection rate in a heterojunction made of two ballistic electrodes. Both the spin-orbit interaction and interface scattering effect are taken into account. Our model is consistent with the well-documented results of ferromagnetic-metal junctions. It explains the recent experimental results of a dilute-magnetic-semiconductor/semiconductor junction and predicts solutions to enhance the spin-injection rate across a ferromagnetic-semiconductor junction.

引用

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页码：66803 / 1

页数：4

相关论文

共 32 条

[1]

[Anonymous], 1989, Quantum phenomena

[2] PERPENDICULAR TRANSPORT THROUGH MAGNETIC MULTILAYERS [J].

BAUER, GEW .

PHYSICAL REVIEW LETTERS, 1992, 69 (11) :1676-1679

[3] TRANSITION FROM METALLIC TO TUNNELING REGIMES IN SUPERCONDUCTING MICRO-CONSTRICTIONS - EXCESS CURRENT, CHARGE IMBALANCE, AND SUPER-CURRENT CONVERSION [J].

BLONDER, GE ;

TINKHAM, M ;

KLAPWIJK, TM .

PHYSICAL REVIEW B, 1982, 25 (07) :4515-4532

[4] Hall-like effect induced by spin-orbit interaction [J].

Bulgakov, EN ;

Pichugin, KN ;

Sadreev, AF ;

Streda, P ;

Seba, P .

PHYSICAL REVIEW LETTERS, 1999, 83 (02) :376-379

[5] ELECTRONIC ANALOG OF THE ELECTROOPTIC MODULATOR [J].

DATTA, S ;

DAS, B .

APPLIED PHYSICS LETTERS, 1990, 56 (07) :665-667

[6] ANDREEV REFLECTION IN FERROMAGNET-SUPERCONDUCTOR JUNCTIONS [J].

DEJONG, MJM ;

BEENAKKER, CWJ .

PHYSICAL REVIEW LETTERS, 1995, 74 (09) :1657-1660

[7] Injection and detection of a spin-polarized current in a light-emitting diode [J].

Fiederling, R ;

Keim, M ;

Reuscher, G ;

Ossau, W ;

Schmidt, G ;

Waag, A ;

Molenkamp, LW .

NATURE, 1999, 402 (6763) :787-790

[8] Experimental search for the electrical spin injection in a semiconductor [J].

Filip, AT ;

Hoving, BH ;

Jedema, FJ ;

van Wees, BJ .

PHYSICAL REVIEW B, 2000, 62 (15) :9996-9999

[9] Spin-valve effects in a semiconductor field-effect transistor: A spintronic device [J].

Gardelis, S ;

Smith, CG ;

Barnes, CHW ;

Linfield, EH ;

Ritchie, DA .

PHYSICAL REVIEW B, 1999, 60 (11) :7764-7767

[10] Perpendicular giant magnetoresistance of magnetic multilayers [J].

Gijs, MAM ;

Bauer, GEW .

ADVANCES IN PHYSICS, 1997, 46 (3-4) :285-445

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