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Unconventional magnetoresistance induced by sperimagnetism in GdFeCo

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Alternative Title
Unconventional magnetoresistance induced by sperimagnetism in GdFeCo
Abstract
We investigate the magnetoresistance of ferrimagnetic GdFeCo across the magnetization compensation temperature T-M. The magnetic field dependence of longitudinal resistivity (rho(xx)) shows opposite trends below and above T-M, and the variation of rho(xx) with B becomes more significant as the temperature decreases. The observed unconventional magnetoresistance is attributed to the sperimagnetism of GdFeCo. Further investigations on the transverse resistivity (rho(xy)) of GdFeCo unveils that, contrary to the recent reports that the transition metal dominates transport of rare-earth transition-metal ferrimagnets, the Gd contribution to magnetoresistance is comparable to the FeCo contribution, showing that the transport of GdFeCo is antiferromagnetic. Our results therefore show that ferrimagnets are a convenient platform for studying antiferromagnetic spin transport and also are potential materials that can enable antiferromagnetic spin devices.
Author(s)
박재현Yuushou Hirata강준호이수길김상훈Cao Van Phuoc정종률박정민박승영조영훈Arata TsukamotoTeruo Ono김세권김갑진
Issued Date
2021
Type
Article
Keyword
SuperimagnetismFerrimagnet
DOI
10.1103/PhysRevB.103.014421
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9525
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_gale_infotracacademiconefile_A652563048&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Unconventional%20magnetoresistance%20induced%20by%20sperimagnetism%20in%20GdFeCo&offset=0&pcAvailability=true
Publisher
PHYSICAL REVIEW B
Location
미국
Language
영어
ISSN
2469-9950
Citation Volume
103
Citation Number
1
Citation Start Page
014421
Citation End Page
014421
Appears in Collections:
Natural Science > Physics
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