The coherent spin dynamics of holes in Mg-doped (p-type) wurtzite GaN is studied by time-resolved Kerr rotation technique. We observe the spin precession of holes with the spin coherence time of 120ps, which is distinguished from that of electrons by comparison with the results in Si-doped n-GaN. The g factor anisotropy of holes is determined to be g h=2.17±0.03 and g h=2.27±0.03. We identify that the involved holes are in the valence band B (upper Γ7) of wurtzite GaN.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2005 Sep 15|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics