title: Temperature dependence of current-induced magnetization switching in spin valves with a ferrimagnetic CoGd free layer.
abstract: The temperature dependence of current-induced magnetization switching of ferrimagnetic CoGd free layers in spin valves is explored. At temperatures well above and well below the magnetization compensation temperature (T(MC)) of CoGd, a current flowing from the free layer to the CoFe fixed layer aligns the moments of the two layers parallel, and a current flowing in the opposite direction aligns them antiparallel. However, for intermediate temperatures just above T(MC), the current-induced alignment of the moments is reversed. We attribute this effect to the different compensation temperatures of the net magnetization and angular momentum of CoGd.
authors.affiliation: IBM Almaden Research Center, San Jose, California 95120, USA.
authors.forename: Xin
authors.initials: X
authors.lastname: Jiang
authors.forename: Li
authors.initials: L
authors.lastname: Gao
authors.forename: Jonathan Z
authors.initials: JZ
authors.lastname: Sun
authors.forename: Stuart S P
authors.initials: SS
authors.lastname: Parkin