TY - JOUR
T1 - Disorder Dependence of Interface Spin Memory Loss
AU - Gupta, Kriti
AU - Wesselink, Rien J.H.
AU - Liu, Ruixi
AU - Yuan, Zhe
AU - Kelly, Paul J.
PY - 2020/2/27
Y1 - 2020/2/27
N2 - The discontinuity of a spin-current through an interface caused by spin-orbit coupling is characterized by the spin memory loss (SML) parameter δ. We use first-principles scattering theory and a recently developed local current scheme to study the SML for Au|Pt, Au|Pd, Py|Pt, and Co|Pt interfaces. We find a minimal temperature dependence for nonmagnetic interfaces and a strong dependence for interfaces involving ferromagnets that we attribute to the spin disorder. The SML is larger for Co|Pt than for Py|Pt because the interface is more abrupt. Lattice mismatch and interface alloying strongly enhance the SML that is larger for a Au|Pt than for a Au|Pd interface. The effect of the proximity-induced magnetization of Pt is negligible.
AB - The discontinuity of a spin-current through an interface caused by spin-orbit coupling is characterized by the spin memory loss (SML) parameter δ. We use first-principles scattering theory and a recently developed local current scheme to study the SML for Au|Pt, Au|Pd, Py|Pt, and Co|Pt interfaces. We find a minimal temperature dependence for nonmagnetic interfaces and a strong dependence for interfaces involving ferromagnets that we attribute to the spin disorder. The SML is larger for Co|Pt than for Py|Pt because the interface is more abrupt. Lattice mismatch and interface alloying strongly enhance the SML that is larger for a Au|Pt than for a Au|Pd interface. The effect of the proximity-induced magnetization of Pt is negligible.
UR - http://www.scopus.com/inward/record.url?scp=85081788318&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.124.087702
DO - 10.1103/PhysRevLett.124.087702
M3 - Article
C2 - 32167325
AN - SCOPUS:85081788318
SN - 0031-9007
VL - 124
JO - Physical review letters
JF - Physical review letters
IS - 8
M1 - 087702
ER -