Self-induced inverse spin Hall effect in permalloy at room temperature

Autor:	Tsukahara, Ayaka, Ando, Yuichiro, Kitamura, Yuta, Emito, Hiroyuki, Shikoh, Eiji, Delmo, Michael P., Shinjo, Teruya, Shiraishi, Masashi
Rok vydání:	2013
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Materials Science
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.89.235317
Popis:	Inverse spin Hall effect (ISHE) allows the conversion of pure spin current into charge current in nonmagnetic materials (NM) due to spin-orbit interaction (SOI). In ferromagnetic materials (FM), SOI is known to contribute to anomalous Hall effect (AHE), anisotropic magnetoresistance (AMR), and other spin-dependent transport phenomena. However, SOI in FM has been ignored in ISHE studies in spintronic devices, and the possibility of "self-induced ISHE" in FM has never been explored until now. In this paper, we demonstrate the experimental verification of ISHE in FM. We found that the spin-pumping-induced spin current in permalloy (Py) film generates a transverse electromotive force (EMF) in the film itself, which results from the coupling of spin current and SOI in Py. The control experiments ruled out spin rectification effect and anomalous Nernst effect as the origin of the EMF. Comment: 28 page, 5 figures, supplemental information (To appear in Physical Review B (Regular Article))
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1301.3580 Zobrazit plný text záznamu View this record from Arxiv