Title
Spin transport parameters in <tex>$Ni_{80}Fe_{20}/Ru$</tex> and <tex>$Ni_{80}Fe_{20}/Ta$</tex> bilayers Spin transport parameters in <tex>$Ni_{80}Fe_{20}/Ru$</tex> and <tex>$Ni_{80}Fe_{20}/Ta$</tex> bilayers
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Lancaster, Pa ,
Subject
Physics
Source (journal)
Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
Volume/pages
90(2014) :18 , 8 p.
ISSN
1098-0121
1550-235X
1098-0121
Article Reference
184401
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We present a systematic study of the spin transport properties in two different bilayer systems, Ni80Fe20/Ru and Ni80Fe20/Ta, combining ferromagnetic resonance (FMR) and inverse spin Hall effect (ISHE) voltage measurements. We have estimated the effective spin mixing conductance gl by analyzing the permalloy (Py) thickness dependence of the FMR linewidth obtaining gl = (3.8 0.7) x 10(15) cm(-2) and gl = (1.3 0.4) x 10(15) cm(-2) for Py/Ru and Py/Ta, respectively. Analyzing the Ta thickness dependence of the ISHE voltage, we have been able to extract the spin diffusion length, Asp = 1.5 0.5 nm, and spin Hall angle, OsH = -0.03 0.01, of Ta. From the two series of Py/Ta bilayers with thickness variation of ferromagnetic and nonmagnetic layers, respectively we demonstrate a path to estimate the spin diffusion length from the experimental data, independent of the spin Hall angle and the microwave field amplitude.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/2116df/9500.pdf
E-info
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000345416000003&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000345416000003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000345416000003&DestLinkType=CitingArticles&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848
Handle