Inverse Spin-Hall Effect Induced by Spin Pumping in Different Thickness Pt Films

Author

Nakayama, Hiroyasu ; Ando, Kazuya ; Harii, Kazuya ; Kajiwara, Yosuke ; Yoshino, Tatsuro ; Uchida, Ken-ichi ; Saitoh, Eiji

Author_Institution

Inst. for Mater. Res., Tohoku Univ., Sendai, Japan

Volume

46

Issue

6

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

2202

Lastpage

2204

Abstract

The inverse spin-Hall effect, conversion of spin currents into electromotive force, has been investigated in Pt thin films with changing the thickness of the Pt films. We measured the electric voltage due to the inverse spin-Hall effect induced by the spin pumping in Ni₈₁Fe₁₉/Pt bilayer systems with different Pt thickness films (d _N=10, 30, 50, and 75 nm) at room temperature. The experimental results show that the signal induced by the inverse spin-Hall effect V _ISHE is inversely proportional to the Pt thickness d _N, which is well reproduced by a simple equivalent circuit model.

Keywords

electric potential; iron alloys; metallic thin films; nickel alloys; platinum; spin Hall effect; Ni₈₁Fe₁₉-Pt; bilayer systems; electric voltage; electromotive force; inverse spin-Hall effect; simple equivalent circuit model; size 10 nm; size 30 nm; size 50 nm; size 75 nm; spin currents; spin pumping; temperature 293 K to 298 K; thin films; Electric variables measurement; Electrons; Magnetization; Materials science and technology; Paramagnetic materials; Physics; Shape; Thickness measurement; Transistors; Voltage measurement; Ferromagnetic resonance; inverse spin-Hall effect; spin currents; spin pumping;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2010.2042150

Filename

5467502