Title :
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
fDate :
6/1/2010 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2010.2042150
