Time-domain measurements of spin relaxation processes of dangling-bond defects in hydrogenated amorphous silicon
- 1 February 1994
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Part B
- Vol. 69 (2) , 263-275
- https://doi.org/10.1080/01418639408240108
Abstract
Spin relaxation processes of dangling-bond defects (g=2.055) in hydrogenated amorphous silicon (a-Si: H) and in deuterated amorphous silicon (a-Si: D) have been measured in the time domain by using the pulsed electron spin resonance technique. Phase relaxation measured as two-pulse echo decay is dominated by dipolar field fluctuations arising from hydrogen (or deuterium) nuclear spin flip flops. The inversion recovery curves of a-Si: H and a-Si: D are similar, which indicates that hydrogen hyperfine interactions are not directly involved in the spinlattice relaxation.Keywords
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