Phase diagram of diluted magnetic semiconductor quantum wells

被引:47
作者
Brey, L [1 ]
Guinea, F [1 ]
机构
[1] CSIC, Inst Ciencia Mat, Madrid 28049, Spain
关键词
D O I
10.1103/PhysRevLett.85.2384
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The phase diagram of diluted magnetic semiconductor quantum wells is investigated. The interaction between the carriers in the hole gas can lead to first-order ferromagnetic transitions, which remain abrupt in applied fields. These transitions can be induced by magnetic fields or, in double-layer systems, by electric fields. We make a number of precise experimental predictions for observing these first-order phase transitions.
引用
收藏
页码:2384 / 2387
页数:4
相关论文
共 26 条
[1]   Room temperature magnetoresistance and cluster-glass behavior in the Tl2-xBixMn2O7 (0≤x≤0.5) pyrochlore series [J].
Alonso, JA ;
Martínez, JL ;
Martínez-Lope, MJ ;
Casais, MT ;
Fernández-Díaz, MT .
PHYSICAL REVIEW LETTERS, 1999, 82 (01) :189-192
[2]   Magnetic ordering in GaAlAs:Mn double well structure [J].
Boselli, MA ;
Lima, ICD ;
Ghazali, A .
JOURNAL OF APPLIED PHYSICS, 2000, 87 (09) :6439-6441
[3]   Stability and dynamics of free magnetic polarons [J].
Calderón, MJ ;
Brey, L ;
Littlewood, PB .
PHYSICAL REVIEW B, 2000, 62 (05) :3368-3371
[4]   Free carrier-induced ferromagnetism in structures of diluted magnetic semiconductors [J].
Dietl, T ;
Haury, A ;
dAubigne, YM .
PHYSICAL REVIEW B, 1997, 55 (06) :R3347-R3350
[5]   Spin-dependent perpendicular magnetotransport through a tunable ZnSe/Zn1-xMnxSe heterostructure:: A possible spin filter? [J].
Egues, JC .
PHYSICAL REVIEW LETTERS, 1998, 80 (20) :4578-4581
[6]   NEGATIVE COMPRESSIBILITY OF INTERACTING 2-DIMENSIONAL ELECTRON AND QUASI-PARTICLE GASES [J].
EISENSTEIN, JP ;
PFEIFFER, LN ;
WEST, KW .
PHYSICAL REVIEW LETTERS, 1992, 68 (05) :674-677
[7]   COMPRESSIBILITY OF THE 2-DIMENSIONAL ELECTRON-GAS - MEASUREMENTS OF THE ZERO-FIELD EXCHANGE ENERGY AND FRACTIONAL QUANTUM HALL GAP [J].
EISENSTEIN, JP ;
PFEIFFER, LN ;
WEST, KW .
PHYSICAL REVIEW B, 1994, 50 (03) :1760-1778
[8]  
Ferreira LG, 1997, SEMICOND SCI TECH, V12, P1592, DOI 10.1088/0268-1242/12/12/008
[9]  
Gross E. K. U., 1991, Many-Particle Theory
[10]   Phase separation and enhanced charge-spin coupling near magnetic transitions [J].
Guinea, F ;
Gómez-Santos, G ;
Arovas, DP .
PHYSICAL REVIEW B, 2000, 62 (01) :391-401