Jeon, Kun-Rok Min, Byoung-Chul Shin, Il-Jae Park, Chang-Yup Lee, Hun-Sung Jo, Young-Hun Shin, Sung-Chul 2024-01-20T15:32:37Z 2024-01-20T15:32:37Z 2021-09-04 2012-02 1367-2630 https://pubs.kist.re.kr/handle/201004/129608 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. English IOP PUBLISHING LTD Unconventional Hanle effect in a highly ordered CoFe/MgO/n-Si contact: non-monotonic bias and temperature dependence and sign inversion of the spin signal Article 10.1088/1367-2630/14/2/023014 1 NEW JOURNAL OF PHYSICS, v.14 NEW JOURNAL OF PHYSICS 14 scie scopus 000302304700004 2-s2.0-84863173578 Physics, Multidisciplinary Physics Article INJECTION SILICON POLARIZATION SPINTRONICS TRANSPORT