UM
Possible magnetic-polaron-switched positive and negative magnetoresistance in the GdSi single crystals
Li H.3; Xiao Y.4; Schmitz B.4; Persson J.4; Schmidt W.3; Meuffels P.2; Roth G.1; Bruckel T.4
2012-11-07
Source PublicationScientific Reports
ISSN20452322
Volume2
AbstractMagnetoresistance (MR) has attracted tremendous attention for possible technological applications. Understanding the role of magnetism in manipulating MR may in turn steer the searching for new applicable MR materials. Here we show that antiferromagnetic (AFM) GdSi metal displays an anisotropic positive MR value (PMRV), up to ∼415%, accompanied by a large negative thermal volume expansion (NTVE). Around T N the PMRV translates to negative, down to ∼-10.5%. Their theory-breaking magnetic-field dependencies [PMRV: dominantly linear; negative MR value (NMRV): quadratic] and the unusual NTVE indicate that PMRV is induced by the formation of magnetic polarons in 5d bands, whereas NMRV is possibly due to abated electron-spin scattering resulting from magnetic-field-Aligned local 4f spins. Our results may open up a new avenue of searching for giant MR materials by suppressing the AFM transition temperature, opposite the case in manganites, and provide a promising approach to novel magnetic and electric devices.
DOI10.1038/srep00750
URLView the original
Language英語
Fulltext Access
Citation statistics
Cited Times [WOS]:14   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Rheinisch-Westfälische Technische Hochschule Aachen
2.Forschungszentrum Jülich (FZJ)
3.Institut Laue-Langevin
4.JARA-FIT
Recommended Citation
GB/T 7714
Li H.,Xiao Y.,Schmitz B.,et al. Possible magnetic-polaron-switched positive and negative magnetoresistance in the GdSi single crystals[J]. Scientific Reports,2012,2.
APA Li H..,Xiao Y..,Schmitz B..,Persson J..,Schmidt W..,...&Bruckel T..(2012).Possible magnetic-polaron-switched positive and negative magnetoresistance in the GdSi single crystals.Scientific Reports,2.
MLA Li H.,et al."Possible magnetic-polaron-switched positive and negative magnetoresistance in the GdSi single crystals".Scientific Reports 2(2012).
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li H.]'s Articles
[Xiao Y.]'s Articles
[Schmitz B.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li H.]'s Articles
[Xiao Y.]'s Articles
[Schmitz B.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li H.]'s Articles
[Xiao Y.]'s Articles
[Schmitz B.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

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