Spin-dependent resonant tunneling in double-barrier magnetic heterostructures

被引：16

作者：

Petukhov, AG ^{[1
]}

Demchenko, DO ^{[1
]}

Chantis, AN ^{[1
]}

机构：

[1] S Dakota Sch Mines & Technol, Dept Phys, Rapid City, SD 57701 USA

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B | 2000年 / 18卷 / 04期

关键词：

D O I：

10.1116/1.1305332

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Recent advances in molecular beam epitaxial growth made it possible to fabricate exotic heterostructures comprised of magnetic films or buried layers (ErAs,GaxMn1-xAs) integrated with conventional semiconductors (GaAs) and to explore quantum transport in these heterostructures. It is particularly interesting to study spin-dependent resonant tunneling in double-barrier resonant tunneling diodes (RTDs) with magnetic elements such as GaAs/AlAs/ErAs/AlAs/GaAs and GaAs/AlAs/GaxMn1-xAs/AlAs/GaAs. We present the results of our theoretical studies and computer simulations of transmission coefficients and current-voltage characteristics of RTDs based on these double-barrier structures. In particular, resonant tunneling of holes in the GaxMn1-xAs-based RTDs is considered. Our approach is based on k.p perturbation theory with exchange splitting effects taken into account. (C) 2000 American Vacuum Society. [S0734-211X(00)04604-7].

引用

页码：2109 / 2113

页数：5

共 20 条

[1]

ALTARELLI M, 1986, P LES HOUCH WINT SCH

[2] HOLE SUBBANDS IN STRAINED GAAS-GA1-XALX AS QUANTUM-WELLS - EXACT SOLUTION OF THE EFFECTIVE-MASS EQUATION [J].

ANDREANI, LC ;

PASQUARELLO, A ;

BASSANI, F .

PHYSICAL REVIEW B, 1987, 36 (11) :5887-5894

[3] RESONANT-TUNNELING THROUGH ERAS SEMIMETAL QUANTUM-WELLS [J].

BREHMER, DE ;

ZHANG, K ;

SCHWARZ, CJ ;

CHAU, SP ;

ALLEN, SJ ;

IBBETSON, JP ;

ZHANG, JP ;

PALMSTROM, CJ ;

WILKENS, B .

APPLIED PHYSICS LETTERS, 1995, 67 (09) :1268-1270

[4]

BREHMER DE, 1999, THESIS UC SANTA BARB

[5]

BYCHKOV YA, 1984, JETP LETT+, V39, P78

[6] RESONANT TUNNELING OF HOLES IN THE MULTIBAND EFFECTIVE-MASS APPROXIMATION [J].

CHAO, CYP ;

CHUANG, SL .

PHYSICAL REVIEW B, 1991, 43 (09) :7027-7039

[7]

DEMCHENKO DO, UNPUB

[8]

Duke C. B., 1969, Tunneling in Solids

[9] Observation of spin injection at a ferromagnet-semiconductor interface [J].

Hammar, PR ;

Bennett, BR ;

Yang, MJ ;

Johnson, M .

PHYSICAL REVIEW LETTERS, 1999, 83 (01) :203-206

[10] Spin-orbit effects on the band structure and Fermi surface of ErAs and ErxSc1-xAs [J].

Lambrecht, WRL ;

Segall, B ;

Petukhov, AG ;

Bogaerts, R ;

Herlach, F .

PHYSICAL REVIEW B, 1997, 55 (15) :9239-9242

← 1 2 →