Room temperature spin coherence in ZnO

Ghosh, S.; Sih, V.; Lau, W. H.; Awschalom, D. D.; Bae, S. -Y.; Wang, S.; Vaidya, S.; Chapline, G.

Room temperature spin coherence in ZnO

Authors

Description

Time-resolved optical techniques are used to explore electron spin dynamics in bulk and epilayer samples of n-type ZnO as a function of temperature and magnetic field. The bulk sample yields a spin coherence time T2* of 20 ns at T = 30 K. Epilayer samples, grown by pulsed laser deposition, show a maximum T2* of 2 ns at T = 10 K, with spin precession persisting up to T = 280 K.
3 pages, 3 figures