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Novel conguration of Mg-H complexes in GaN

Published online by Cambridge University Press:  21 March 2011

Sukit Limpijumnong ,
John E. Northrup  and
Chris G. Van de Walle
Sukit Limpijumnong
Affiliation:
Xerox PARC, 3333 Coyote Hill Road, Palo Alto, CA 94304.
John E. Northrup
Affiliation:
Xerox PARC, 3333 Coyote Hill Road, Palo Alto, CA 94304.
Chris G. Van de Walle
Affiliation:
Xerox PARC, 3333 Coyote Hill Road, Palo Alto, CA 94304.
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Abstract

We describe a novel conguration of the Mg-H complex in GaN, which is not the lowest-energy conguration at T =0 but is stabilized at elevated temperatures by the large entropy associated with a set of low-energy rotational excitations. We focus on a comparison with two types of experimental results: (1) vibrational spectroscopy using polarized light [B. Clerjaud et al., Phys. Rev. B 61, 8328 (2000)]; and (2) ion-channeling [W. Wampler et al., J. Appl. Phys. 90, 108 (2001)]. New results on the predicted quantum-mechanical delocalization of the hydrogen atom and on the ect of replacing hydrogen with deuterium are reported.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 693 , 2001 , I2.5.1
Copyright
Copyright © Materials Research Society 2002

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Footnotes

*

Permanent address: School of Physics,Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand.

References

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