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Raman Spectroscopy of A Novel Diluted Magnetic Semiconductor: Cubic Cd1−xMnxSe.

Published online by Cambridge University Press:  21 February 2011

R. G. Alonso ,
E.-K. Suh ,
H. Pascher ,
E. Oh ,
A. K. Ramdas ,
N. Samarth ,
H. Luo  and
J. K. Furdyna
R. G. Alonso
Affiliation:
Purdue University, Dept. of Physics, West Lafayette, IN 47907
E.-K. Suh
Affiliation:
Purdue University, Dept. of Physics, West Lafayette, IN 47907
H. Pascher
Affiliation:
Purdue University, Dept. of Physics, West Lafayette, IN 47907
E. Oh
Affiliation:
Purdue University, Dept. of Physics, West Lafayette, IN 47907
A. K. Ramdas
Affiliation:
Purdue University, Dept. of Physics, West Lafayette, IN 47907
N. Samarth
Affiliation:
University of Notre Dame, Dept. of Physics, Notre Dame, IN 46556
H. Luo
Affiliation:
University of Notre Dame, Dept. of Physics, Notre Dame, IN 46556
J. K. Furdyna
Affiliation:
University of Notre Dame, Dept. of Physics, Notre Dame, IN 46556
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Abstract

In contrast to the bulk diluted magnetic semiconductor (DMS) Cd1−xMnxSe which occurs with the wurtzite structure, its epilayers grown on (001) GaAs substrate by Molecular Beam Epitaxy exhibit the cubic zinc-blende structure. Raman spectroscopy and photoluminescence studies on this novel DMS show (1) a “two-mode” behavior of the zone center optical phonons, (2) the Raman line associated with the spin-flip in the Zeeman split S = 5/2 ground state of Mn2+, and (3) large Raman shifts associated with the spin-flip of donor-bound electrons. The large magnetic field dependence in (3) with saturation at high fields and low temperature shows that the s-d exchange interaction characteristic of DMS's is also manifested strikingly in the zinc-blende phase of Cd1−xMnxSe.

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 , 497
Copyright
Copyright © Materials Research Society 1990

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References

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