Physics
Scientific paper
Feb 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012njph...14b3014j&link_type=abstract
New Journal of Physics, Volume 14, Issue 2, pp. 023014 (2012).
Physics
Scientific paper
We report in this paper the unconventional bias and temperature dependence of the Hanle effect in a highly ordered CoFe/MgO/n-Si contact investigated by means of a three-terminal Hanle method. The spin signal and the effective spin lifetime obtained in this system show non-monotonic behavior with bias and temperature variations. Interestingly, the sign of the spin signal changes significantly with the bias voltage at a low temperature. The sign inversion is presumably ascribed to the contribution of interfacial resonant states formed at the CoFe/MgO interface or bound states in the Si surface during the spin extraction process.
Jeon Kun-Rok
Jo Young-Hun
Lee Hun-Sung
Min Byoung-Chul
Park Chang-Yup
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