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Photoluminescence Studies of Diluted Magnetic Semiconductors Under Hydrostatic Pressure: Cd1−xMnxTe

Published online by Cambridge University Press:  21 February 2011

Maneesha Prakash
Affiliation:
Department of Physics, University of Missouri, Columbia, MO 65211
Meera Chandrasekhar
Affiliation:
Department of Physics, University of Missouri, Columbia, MO 65211
H.R. Chandrasekhar
Affiliation:
Department of Physics, University of Missouri, Columbia, MO 65211
I. Miotkowski
Affiliation:
Department of Physics, Purdue University, W. Lafayette, IN 47907
A.K. Ramdas
Affiliation:
Department of Physics, Purdue University, W. Lafayette, IN 47907
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Abstract

We present a photoluminescence study of the excitons and electron-to-acceptor (e-°) transitions in Cd1−xMnxTe (x = 0.05 and 0.15) under hydrostatic pressure at 15K. We investigate the changing magnetic and Coulombic binding energies of the e-° transition under pressure. We find that the e-° binding energy increases with pressure for x = 0.15 where the magnetic term due to the acceptor bound magnetic polaron is large, while it decreases for x = 0.05. We also obtain the pressure coefficients of the excitonic and acceptor related transitions.

Type
Research Article
Copyright
Copyright © Materials Research Society 1990

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References

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9 The e-Ao binding energies are calculated by adding the binding energy of AoX, 10 (11) meV to the separation between AoX and e-Ao. The AoX binding energy has a Coulombic part that contributes 7 meV (obtained for CdTe), and 3 (4) meV magnetic part at 15K for x = 0.05 (0.15). These values were obtained from Ref. 3.Google Scholar
10 Prakash, M., Chandrasekhar, M., Chandrasekhar, H.R., Miotkowski, I. and Ramdas, A.K., unpublished.Google Scholar

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