Cited 13 time in webofscience Cited 8 time in scopus

Thermal spin injection and accumulation in CoFe/MgO/n-type Ge contacts

Title
Thermal spin injection and accumulation in CoFe/MgO/n-type Ge contacts
Authors
Jeon, Kun-RokMin, Byoung-ChulPark, Seung-YoungLee, Kyeong-DongSong, Hyon-SeokPark, Youn-HoJo, Young-HunShin, Sung Chul
DGIST Authors
Shin, Sung Chul
Issue Date
2012-12
Citation
Scientific Reports, 2
Type
Article
Article Type
Article
Keywords
ROOM-TEMPERATURESILICONSPINTRONICSFERROMAGNETMAGNETORESISTANCEPOLARIZATIONTRANSPORT
ISSN
2045-2322
Abstract
Understanding the interplay between spin and heat is a fundamental and intriguing subject. Here we report thermal spin injection and accumulation in CoFe/MgO/n-type Ge contacts with an asymmetry of tunnel spin polarization. Using local heating of electrodes by laser beam or electrical current, the thermally-induced spin accumulation is observed for both polarities of the temperature gradient across the tunnel contact. We observe that the magnitude of thermally injected spin signal scales linearly with the power of local heating of electrodes, and its sign is reversed as we invert the temperature gradient. A large Hanle magnetothermopower (HMTP) of about 7.0% and the Seebeck spin tunneling coefficient of larger than 0.74 meV K-1 are obtained at room temperature.
URI
http://hdl.handle.net/20.500.11750/2451
DOI
10.1038/srep00962
Publisher
Nature Publishing Group
Files:
Collection:
ETC1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE