Optical Detection of Electron Nuclear Double Resonance on the Residual Donor in GaN
Tóm tắt
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.
Tài liệu tham khảo
H. P. Maruska, J. J. Tietjen, Appl. Phys. Lett. 15, 327 (1969).
M. Ilegems, H. C. Montgomery, J. Phys. Chem. Sol. 34, 885 (1973).
E. R. Glaser, T. A. Kennedy, H. C. Crookham, J. A. Freitas, Jr., M. Asif Khan, D. T. Olson, J. N. Kuznia, Appl. Phys. Lett. 63, 2673–2675 (1993).
W. E. Carlos, J. A. Freitas, Jr., M. Asif Khan, D. T. Olson, J. N. Kuznia, Phys. Rev. B 48, 17878–17884 (1993).
E. R. Glaser, T. A. Kennedy, K. Doverspike, L. B. Rowland, D. K. Gaskill, J. A. Freitas, Jr., M. Asif Khan, D. T. Olson, J. N. Kuznia, D. K. Wickenden, Phys. Rev. B 51, 13326–13336 (1995).
J. -M. Spaeth, J. R. Niklas, R. H. Bartram, ‘Structural Analysis of Point Defects in Solids’, Springer Series in Solid-State Sciences 43 (1992)
P. Boguslawski, E. L. Briggs, J. Bernholc, Phys. Rev. B 51, 17255–17258 (1995).
Jorg Neugebauer, Chris G. Van de Walle, Phys. Rev. B 50, 8067–8070 (1994).
Oc Hee Han, Hye Kyung C. Timken, Eric Oldfield, J. Chem. Phys. 89, 6046–6052 (1988).
G. Denninger, R. Beerhalter, D. Reiser, K. Maier, J. Schneider, T. Detchprohm, K. Hiramatsu, Solid. State Commun. accepted