Observation of transverse spin Nernst magnetoresistance induced by thermal spin current in ferromagnet/non-magnet bilayers

Dong-Jun Kim, Chul-Yeon Jeon, Jong-Guk Choi, Jae Wook Lee, Srivathsava Surabhi, Jong-Ryul Jeong, Kyung-Jin Lee and Byong-Guk Park ()
Additional contact information
Dong-Jun Kim: Department of Materials Science and Engineering and KI for Nanocentury, KAIST
Chul-Yeon Jeon: Department of Materials Science and Engineering and KI for Nanocentury, KAIST
Jong-Guk Choi: Department of Materials Science and Engineering and KI for Nanocentury, KAIST
Jae Wook Lee: Department of Materials Science and Engineering and KI for Nanocentury, KAIST
Srivathsava Surabhi: Graduate School of Energy Science Technology, Chungnam National University
Jong-Ryul Jeong: Graduate School of Energy Science Technology, Chungnam National University
Kyung-Jin Lee: Korea University
Byong-Guk Park: Department of Materials Science and Engineering and KI for Nanocentury, KAIST

Nature Communications, 2017, vol. 8, issue 1, 1-6

Abstract: Abstract Electric generation of spin current via spin Hall effect is of great interest as it allows an efficient manipulation of magnetization in spintronic devices. Theoretically, pure spin current can be also created by a temperature gradient, which is known as spin Nernst effect. Here, we report spin Nernst effect-induced transverse magnetoresistance in ferromagnet/non-magnetic heavy metal bilayers. We observe that the magnitude of transverse magnetoresistance in the bilayers is significantly modified by heavy metal and its thickness. This strong dependence of transverse magnetoresistance on heavy metal evidences the generation of thermally induced pure spin current in heavy metal. Our analysis shows that spin Nernst angles of W and Pt have the opposite sign to their spin Hall angles. Moreover, our estimate implies that the magnitude of spin Nernst angle would be comparable to that of spin Hall angle, suggesting an efficient generation of spin current by the spin Nernst effect.

Date: 2017
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-017-01493-5 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-01493-5

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-017-01493-5

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().