Large hysteretic magnetoresistance of silicide nanostructures

T. Kim; B. Naser; Ralph Chamberlin; M. V. Schilfgaarde; Peter Bennett; J. P. Bird

doi:10.1103/PhysRevB.76.184404

Large hysteretic magnetoresistance of silicide nanostructures

T. Kim, B. Naser, Ralph Chamberlin, M. V. Schilfgaarde, Peter Bennett, J. P. Bird

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

We demonstrate a large (as much as 100%) and strongly hysteretic magnetoresistance (MR) in nominally nonferromagnetic silicide films and nanowires. This unusual MR is quenched above a few kelvins, where conventional behavior due to weak antilocalization is recovered. The dynamic characteristics of this effect are suggestive of weakly interacting, localized paramagnetic moments that form at the surface oxide of the silicide nanostructures, with dramatic consequences for transport when the system size is reduced to the nanoscale.

Original language	English (US)
Article number	184404
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	76
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.76.184404
State	Published - Nov 6 2007

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.76.184404

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AU - Naser, B.

AU - Chamberlin, Ralph

AU - Schilfgaarde, M. V.

AU - Bennett, Peter

AU - Bird, J. P.

PY - 2007/11/6

Y1 - 2007/11/6

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AB - We demonstrate a large (as much as 100%) and strongly hysteretic magnetoresistance (MR) in nominally nonferromagnetic silicide films and nanowires. This unusual MR is quenched above a few kelvins, where conventional behavior due to weak antilocalization is recovered. The dynamic characteristics of this effect are suggestive of weakly interacting, localized paramagnetic moments that form at the surface oxide of the silicide nanostructures, with dramatic consequences for transport when the system size is reduced to the nanoscale.

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Large hysteretic magnetoresistance of silicide nanostructures

Abstract

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