Spin injection and the local Hall effect in InAs quantum wells

被引:112
作者
Monzon, FG [1 ]
Roukes, ML [1 ]
机构
[1] CALTECH, Pasadena, CA 91125 USA
关键词
spin injection; nanomagnet; spin transistor;
D O I
10.1016/S0304-8853(98)01205-0
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We report on our efforts to directly inject and detect a spin polarization in an NiFe/(InAs quantum well)/NiFe system at 4.2 K. Numerous device geometries at inter-magnet spacings of between 750 nm and 64 mu m are explored, often demonstrating marked hysteretic behavior consistent with the interaction of strong fringe magnetic fields with the low-density InAs quantum well. These local Hall voltages, interesting in themselves, have been investigated systematically and attempts have been made to minimize their role in smaller spin devices. The apparent lack of a strong and unambiguous spin-coupled signal in our smallest devices suggests that NiFe, InAs interfacial spin-scattering mechanisms are a crucial limiting factor. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:632 / 635
页数:4
相关论文
共 11 条
[1]   OBSERVATION OF THE INTERFACIAL-FIELD-INDUCED WEAK ANTILOCALIZATION IN INAS QUANTUM STRUCTURES [J].
CHEN, GL ;
HAN, J ;
HUANG, TT ;
DATTA, S ;
JANES, DB .
PHYSICAL REVIEW B, 1993, 47 (07) :4084-4087
[2]  
D'yakonov M. I., 1971, Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki, V60, P1954
[3]   ELECTRONIC ANALOG OF THE ELECTROOPTIC MODULATOR [J].
DATTA, S ;
DAS, B .
APPLIED PHYSICS LETTERS, 1990, 56 (07) :665-667
[4]   OBSERVATION OF SPIN PRECESSION IN GAAS INVERSION-LAYERS USING ANTILOCALIZATION [J].
DRESSELHAUS, PD ;
PAPAVASSILIOU, CMA ;
WHEELER, RG ;
SACKS, RN .
PHYSICAL REVIEW LETTERS, 1992, 68 (01) :106-109
[5]   Theory of the bipolar spin switch [J].
Fert, A ;
Lee, SF .
PHYSICAL REVIEW B, 1996, 53 (10) :6554-6565
[6]   Structure and magnetism of the Fe/GaAs interface [J].
Filipe, A ;
Schuhl, A ;
Galtier, P .
APPLIED PHYSICS LETTERS, 1997, 70 (01) :129-131
[7]   SPIN-INJECTION EXPERIMENT [J].
JOHNSON, M ;
SILSBEE, RH .
PHYSICAL REVIEW B, 1988, 37 (10) :5326-5335
[8]   DESIGN, FABRICATION, AND PERFORMANCE OF INTEGRATED MINIATURE SQUID SUSCEPTOMETERS [J].
KETCHEN, MB ;
AWSCHALOM, DD ;
GALLAGHER, WJ ;
KLEINSASSER, AW ;
SANDSTROM, RL ;
ROZEN, JR ;
BUMBLE, B .
IEEE TRANSACTIONS ON MAGNETICS, 1989, 25 (02) :1212-1215
[9]   Strong Hall voltage modulation in hybrid ferromagnet/semiconductor microstructure [J].
Monzon, FG ;
Johnson, M ;
Roukes, ML .
APPLIED PHYSICS LETTERS, 1997, 71 (21) :3087-3089
[10]  
MONZON FG, UNPUB PHYS REV B