Room temperature spin coherence in ZnO

2005/02/25 by S. Ghosh, V. Sih, W. H. Lau +5
Physics and Astronomy · #cond-mat.mtrl-sci

paper · pdf · doi:10.1063/1.1946204

published as Appl. Phys. Lett. 86, 232507 (2005) · 3 pages, 3 figures

arxiv created 2005/02/25 · arxiv updated 2009/12/01

Abstract

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.

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