期刊
APPLIED PHYSICS LETTERS
卷 95, 期 7, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3194781
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- ARO
- ONR
- NSF
Electrically generated spin polarization is probed directly in bulk GaN using Kerr rotation spectroscopy. A series of n-type GaN epilayers are grown in the wurtzite phase both by molecular beam epitaxy and metalorganic chemical vapor deposition with a variety of doping densities chosen to broadly modulate the transverse spin lifetime, T-2*. The spin polarization is characterized as a function of electrical excitation energy over a range of temperatures. Despite weak spin-orbit interactions in GaN, a current-induced spin polarization is observed in the material at temperatures of up to 200 K. (C) 2009 American Institute of Physics. [DOI:10.1063/1.3194781]
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