Journal
PHYSICAL REVIEW B
Volume 63, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.63.121202
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Time-resolved Faraday rotation is used to measure electron spin coherence in n-type GaN epilayers. Despite densities of charged threading dislocations of similar to5 x 10(8) cm(-2), this coherence yields spin lifetimes of similar to 20 ns at T=5 K, and persists to room temperature. Spin dephasing is investigated in the vicinity of the metal-insulator transition. The dependence on both magnetic field and temperature is found to be qualitatively similar to previous studies in n-type GaAs, suggesting a common origin for spin relaxation in these systems.
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