Spontaneous symmetry breaking of exciton magnetic polarons in CdTe/Cd1-xMnxTe quantum wells

被引：13
作者：
Miao, J
Hagston, WE
Stirner, T
机构：
[1] Department of Applied Physics, The University of Hull
来源：
PHYSICAL REVIEW B | 1996年 / 54卷 / 19期
关键词：
D O I：
10.1103/PhysRevB.54.13938
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Theoretical calculations of exciton magnetic-polaron (EMP) energies in semimagnetic CdTe/Cd1-xMnxTe symmetric quantum wells have been performed. The influence of a spontaneous symmetry breaking of the carrier's wave function (the so-called interface-bound magnetic polaron on EMP energies is investigated for various magnetic (Mn) ion concentrations and valence-band offsets. It is demonstrated that the stability of interface-bound magnetic polarons in perfect quantum wells depends on the valence-band offset K, and that, for the accepted value of K in the CdTe/Cd1-xMnxTe system, interface-hound magnetic polarons can form only in samples with low-x values. It is also shown that interface-bound magnetic polarons are destabilized by the presence of interface disorder, or as a result of applying a magnetic field or increasing the lattice temperature.
引用
收藏
页码：13938 / 13945
页数：8
相关论文
共 34 条
[1]  
ALAGUILLAUME CB, 1993, PHYS STATUS SOLIDI B, V175, P369
[2]   OBSERVATION OF POLARON DYNAMICS IN MAGNETIC QUANTUM-WELLS [J].
AWSCHALOM, DD ;
FREEMAN, MR ;
SAMARTH, N ;
LUO, H ;
FURDYNA, JK .
PHYSICAL REVIEW LETTERS, 1991, 66 (09) :1212-1215
[3]   LOW-TEMPERATURE MAGNETIC SPECTROSCOPY OF A DILUTE MAGNETIC SEMICONDUCTOR [J].
AWSCHALOM, DD ;
WARNOCK, J ;
VONMOLNAR, S .
PHYSICAL REVIEW LETTERS, 1987, 58 (08) :812-815
[4]   DYNAMIC SPIN ORGANIZATION IN DILUTE MAGNETIC SYSTEMS [J].
AWSCHALOM, DD ;
HALBOUT, JM ;
VONMOLNAR, S ;
SIEGRIST, T ;
HOLTZBERG, F .
PHYSICAL REVIEW LETTERS, 1985, 55 (10) :1128-1131
[5]   DETERMINATION OF THE BAND-OFFSET OF CDTE/CD1-XMNXTE MULTIPLE-QUANTUM WELLS WITH VERY-LOW X-VALUES [J].
CHEN, P ;
NICHOLLS, JE ;
HOGG, JHC ;
STIRNER, T ;
HAGSTON, WE ;
LUNN, B ;
ASHENFORD, DE .
PHYSICAL REVIEW B, 1995, 52 (07) :4732-4735
[6]   OPTICAL-DETECTION OF CYCLOTRON-RESONANCE OF ELECTRON AND HOLES IN CDTE [J].
DANG, LS ;
NEU, G ;
ROMESTAIN, R .
SOLID STATE COMMUNICATIONS, 1982, 44 (08) :1187-1190
[7]   BOUND MAGNETIC POLARONS IN SEMIMAGNETIC QUANTUM WELLS [J].
DASILVA, CETG .
PHYSICAL REVIEW B, 1985, 32 (10) :6962-6964
[8]   NUMERICAL-SIMULATION OF ANTIFERROMAGNETIC SPIN-PAIRING EFFECTS IN DILUTED MAGNETIC SEMICONDUCTORS AND ENHANCED PARAMAGNETISM AT INTERFACES [J].
FATAH, JM ;
PIOREK, T ;
HARRISON, P ;
STIRNER, T ;
HAGSTON, WE .
PHYSICAL REVIEW B, 1994, 49 (15) :10341-10344
[9]   MAGNETOOPTICAL STUDY OF INTERFACE MIXING IN THE CDTE-(CD,MN)TE SYSTEM [J].
GAJ, JA ;
GRIESHABER, W ;
BODINDESHAYES, C ;
CIBERT, J ;
FEUILLET, G .
PHYSICAL REVIEW B, 1994, 50 (08) :5512-5527
[10]   RELATION OF MAGNETO-OPTICAL PROPERTIES OF FREE-EXCITONS TO SPIN ALIGNMENT OF MN2+ IONS IN CD1-XMNXTE [J].
GAJ, JA ;
PLANEL, R ;
FISHMAN, G .
SOLID STATE COMMUNICATIONS, 1979, 29 (05) :435-438
1234