Optical Detection of Electron Nuclear Double Resonance on the Residual Donor in
GaN
F. K. Koschnick, K. Michael, J.-M. Spaeth
Fachbereich Physik, University of Paderborn
B. Beaumont, Pierre Gibart
Centre de Recherche sur l'Hetero-Epitaxie et ses Applications, CRHEA-CNRS
This article was received on June 2, 1996 and
accepted on September 16, 1996. Abstract
Optically detected electron nuclear double resonance (ODENDOR) was
measured in the 2.2 eV 'yellow' luminescence band associated with
the residual donor in n-type undoped GaN. The ODENDOR lines are due to gallium
and show a quadrupole splitting which can be described with an axial tensor.
The quadrupole parameter was estimated to be q(69Ga) = 1/2
Qzz = 0.22 MHz. A hyperfine interaction for 69Ga of about
0.3 MHz for the isotropic and of about 0.15 MHz for the anisotropic part was
estimated from the width of the ODENDOR lines. It is tentatively suggested that
a Ga interstitial is the residual donor.Outline
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Cite this article as: MRS Internet J. Nitride Semicond. Res. 1, 9(1996).
last updated January 9, 1998 6:58:39 PM.© 1996-1998 The Materials Research Society
