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Observation of Mn2+ Triplet Clusters and Non-Nearest-Neighbor Exchange Effect in (Cd,Mn)Te

Published online by Cambridge University Press:  21 February 2011

Xiaomei Wang ,
D. Heiman ,
S. Foner  and
P. Becla
Xiaomei Wang
Affiliation:
Also Department of Physics
D. Heiman
Affiliation:
Massachusetts Institute of Technology, Francis Bitter National Magnet Laboratory, Cambridge, MA 02139
S. Foner
Affiliation:
Also Department of Physics
P. Becla
Affiliation:
Massachusetts Institute of Technology, Francis Bitter National Magnet Laboratory, Cambridge, MA 02139
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Dilute magnetic semiconductors (DMS), such as Cd1−xMnxTe, are excellent hosts for the study of disordered magnetic systems. In these diluted random alloys, neighboring magnetic ions form clusters through short range spin exchange interactions. A number of experiments [1-8] have been devoted to the investigation of the nearest-neighbor (NN) coupled magnetic ion pairs, by measuring the quantized total spin in a field. In (Cd,Mn)Te, the obtained NN exchange constant J1 is -6.1K[7,8]. However, to understand full range of magnetic and optical phenomena in DMS, it is important to explore the behavior of clusters larger than pairs and interactions beyond NN.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 161: Symposium E – Properties of II-VI Semiconductors: Bulk Crystals, Epitaxial Films, Quantum Well Structures, and Dilute Magnetic Systems , 1989 , 455
Copyright
Copyright © Materials Research Society 1990

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References

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