title: Spin Seebeck effect and spin Hall magnetoresistance at high temperatures for a Pt/yttrium iron garnet hybrid structure.
abstract: Based on unique experimental setups, the temperature dependences of the longitudinal spin Seebeck effect (LSSE) and spin Hall magnetoresistance (SMR) of the Pt/yttrium iron garnet (Pt/YIG) hybrid structure are determined in a wide temperature range up to the Curie temperature of YIG. From a theoretical analysis of the experimental relationship between the SMR and temperature, the spin mixing conductance of the Pt/YIG interface is deduced as a function of temperature. Adopting the deduced spin mixing conductance, the temperature dependence of the LSSE is well reproduced based on the magnon spin current theory. Our research sheds new light on the controversy about the theoretical models for the LSSE.
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China. jrsun@iphy.ac.cn.
authors.forename: Shuanhu
authors.initials: S
authors.lastname: Wang
authors.forename: Lvkuan
authors.initials: L
authors.lastname: Zou
authors.forename: Xu
authors.initials: X
authors.lastname: Zhang
authors.forename: Jianwang
authors.initials: J
authors.lastname: Cai
authors.forename: Shufang
authors.initials: S
authors.lastname: Wang
authors.forename: Baogen
authors.initials: B
authors.lastname: Shen
authors.forename: Jirong
authors.initials: J
authors.lastname: Sun