Spin Currents Excited by Temperature Gradient and Electric Field in Pt/Co/Pt Multilayer Films

Author

Xiao Jun Bai ; Ji Lei Wang ; Xiao Jing Guan ; Xiao Xia Shi ; Chong De Cao

Author_Institution

Dept. of Appl. Phys., Northwestern Polytech. Univ., Xian, China

Volume

6

fYear

2015

fDate

7/7/1905 12:00:00 AM

Firstpage

1

Lastpage

4

Abstract

The anomalous Nernst effect induced by a temperature gradient in Pt (2nm)/Co (0.6nm)/Pt (2nm) multilayer films with perpendicular magnetic anisotropy was studied. The Nernst voltage as a function of magnetic field is hysteretic. Both in-plane temperature gradient and electric field were applied in the same direction x while in-plane voltages along and perpendicular to x were detected synchronously. From a comparison of the voltages, there are apparent differences in the charge and spin currents generated by temperature gradient and electric field.

Keywords

cobalt; magnetic multilayers; magnetic thin films; magnetoelectronics; metallic thin films; perpendicular magnetic anisotropy; platinum; spin polarised transport; thermomagnetic effects; Nernst voltage; Pt-Co-Pt; anomalous Nernst effect; charge currents; in-plane electric field; in-plane temperature gradient; multilayer films; perpendicular magnetic anisotropy; spin current; Electric fields; Films; Magnetic fields; Nonhomogeneous media; Perpendicular magnetic anisotropy; Temperature measurement; Voltage measurement; Spin Electronics; Spin electronics; anomalous Nernst effect; perpendicular magnetic anisotropy; spin current;

fLanguage

English

Journal_Title

Magnetics Letters, IEEE

Publisher

ieee

ISSN

1949-307X

Type

jour

DOI

10.1109/LMAG.2015.2483602

Filename

7283580