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First Microscopic Observation of Cadmium-Hydrogen Pairs in GaN

Published online by Cambridge University Press:  10 February 2011

A. Burchard ,
M. Deicher ,
D. Forkel-Wirth ,
E. E. Haller ,
R. Magerle ,
A. Prospero ,
R. Stötzler  and
The Isolde-Collaboration
A. Burchard
Affiliation:
Fakultät für Physik, Universität Konstanz, D-78434 Konstanz, Germany
M. Deicher
Affiliation:
Fakultät für Physik, Universität Konstanz, D-78434 Konstanz, Germany
D. Forkel-Wirth
Affiliation:
CERN / PPE, CH-1211 Geneva 23, Switzerland
E. E. Haller
Affiliation:
University of California, Dept. of Materials Science, Berkeley CA94270, USA
R. Magerle
Affiliation:
Fakultät für Physik, Universität Konstanz, D-78434 Konstanz, Germany
A. Prospero
Affiliation:
Fakultät für Physik, Universität Konstanz, D-78434 Konstanz, Germany
R. Stötzler
Affiliation:
Fakultät für Physik, Universität Konstanz, D-78434 Konstanz, Germany
The Isolde-Collaboration
Affiliation:
CERN / PPE, CH-1211 Geneva 23, Switzerland
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Abstract

The formation and properties of acceptor-hydrogen pairs in GaN have been studied using radioactive 111mCd acceptors and the perturbed γγ angular correlation spectroscopy (PAC). After H-loading by low energy implantation (100 eV) at temperatures between 295 K and 473 K, the formation of two Cd-H complexes involving about 30% of the Cd-acceptors is observed. The complexes have been identified as single hydrogen atoms bound to the Cd acceptor in two different configurations. The dissociation enthalpies of these configurations have been determined as 1.1(1) eV and 1.8(1) eV, respectively.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 449: Symposium N – III-V Nitrides , 1996 , 961
Copyright
Copyright © Materials Research Society 1997

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References

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