Large magnetoresistance of nickel-silicide nanowires: Non-equilibrium heating of magnetically-coupled dangling bonds

T. Kim; Ralph Chamberlin; J. P. Bird

doi:10.1021/nl3044585

Large magnetoresistance of nickel-silicide nanowires: Non-equilibrium heating of magnetically-coupled dangling bonds

T. Kim, Ralph Chamberlin, J. P. Bird

Physics

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

10 Scopus citations

Abstract

We demonstrate large (>100%) time-dependent magnetoresistance in nickel-silicide nanowires and develop a thermodynamic model for this behavior. The model describes nonequilibrium heating of localized spins in an increasing magnetic field. We find a strong interaction between spins but no long-range magnetic order. The spins likely come from unpaired dangling bonds in the interfacial layers of the nanowires. The model indicates that although these bonds couple weakly to a thermal bath, they dominate the nanowire resistance.

Original language	English (US)
Pages (from-to)	1106-1110
Number of pages	5
Journal	Nano Letters
Volume	13
Issue number	3
DOIs	https://doi.org/10.1021/nl3044585
State	Published - Mar 13 2013

Keywords

Self-assembled nanowires
heat transfer in nanostructures
interfacial spins
magnetoresistance
nanomagnetism
nanostructured silicides

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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10.1021/nl3044585

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abstract = "We demonstrate large (>100%) time-dependent magnetoresistance in nickel-silicide nanowires and develop a thermodynamic model for this behavior. The model describes nonequilibrium heating of localized spins in an increasing magnetic field. We find a strong interaction between spins but no long-range magnetic order. The spins likely come from unpaired dangling bonds in the interfacial layers of the nanowires. The model indicates that although these bonds couple weakly to a thermal bath, they dominate the nanowire resistance.",

keywords = "Self-assembled nanowires, heat transfer in nanostructures, interfacial spins, magnetoresistance, nanomagnetism, nanostructured silicides",

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T1 - Large magnetoresistance of nickel-silicide nanowires

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AU - Kim, T.

AU - Chamberlin, Ralph

AU - Bird, J. P.

PY - 2013/3/13

Y1 - 2013/3/13

N2 - We demonstrate large (>100%) time-dependent magnetoresistance in nickel-silicide nanowires and develop a thermodynamic model for this behavior. The model describes nonequilibrium heating of localized spins in an increasing magnetic field. We find a strong interaction between spins but no long-range magnetic order. The spins likely come from unpaired dangling bonds in the interfacial layers of the nanowires. The model indicates that although these bonds couple weakly to a thermal bath, they dominate the nanowire resistance.

AB - We demonstrate large (>100%) time-dependent magnetoresistance in nickel-silicide nanowires and develop a thermodynamic model for this behavior. The model describes nonequilibrium heating of localized spins in an increasing magnetic field. We find a strong interaction between spins but no long-range magnetic order. The spins likely come from unpaired dangling bonds in the interfacial layers of the nanowires. The model indicates that although these bonds couple weakly to a thermal bath, they dominate the nanowire resistance.

KW - Self-assembled nanowires

KW - heat transfer in nanostructures

KW - interfacial spins

KW - magnetoresistance

KW - nanomagnetism

KW - nanostructured silicides

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JO - Nano Letters

JF - Nano Letters

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ER -

Large magnetoresistance of nickel-silicide nanowires: Non-equilibrium heating of magnetically-coupled dangling bonds

Abstract

Keywords

ASJC Scopus subject areas

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