Spin Injection Into Magnesium Nanowire

Author

Idzuchi, Hiroshi ; Fukuma, Yasuhiro ; Wang, Le ; Otani, Yoshichika

Author_Institution

Inst. for Solid State Phys., Univ. of Tokyo, Kashiwa, Japan

Volume

47

Issue

6

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

1545

Lastpage

1548

Abstract

Spin injection into magnesium from Permalloy is performed in the lateral spin valve geometry. A large spin valve signal of 3.1 mΩ is observed at room temperature. The injector-detector separation dependence of the spin valve signal is analyzed by using a one-dimensional spin-diffusion model. The analysis yields the spin diffusion length of about 200 nm for the Mg nanowires. The short spin diffusion length of magnesium which has a small spin-orbit interaction can possibly be explained by considering the spin-hot-spot relaxation mechanism proposed by Fabian and Das Sarma.

Keywords

Permalloy; magnesium; magnetic relaxation; magnetoelectronics; nanowires; spin dynamics; spin polarised transport; spin valves; spin-orbit interactions; 1D spin-diffusion model; Mg; Permalloy; injector-detector separation; large spin valve signal; lateral spin valve geometry; magnesium nanowire; resistance 3.1 mohm; spin diffusion length; spin injection; spin-hot-spot relaxation mechanism; spin-orbit interaction; temperature 293 K to 298 K; Current measurement; Junctions; Metals; Scattering; Spin polarized transport; Spin valves; Wires; Lateral spin valve; spin hot spot; spin injection; spin relaxation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2011.2108272

Filename

5772190