Abstract
Spin-dependent electron transport in individual magnetite (Fe3O4) nanowires contacted with normal metallic electrodes was investigated. Such a configured device demonstrated a spin-filter effect, that is, only the minority spin carriers can transport through the magnetite nanowire due to its negative spin polarization. An anomalous positive magnetoresistance approximately 7.5% is observed at room temperature. Moreover, the magnetoresistance can be controlled via bias voltage.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Crystallization / methods*
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Electric Impedance
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Electric Wiring / instrumentation*
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Ferrosoferric Oxide / analysis
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Ferrosoferric Oxide / chemistry*
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Filtration / instrumentation
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Filtration / methods
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Magnetics*
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Materials Testing
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Molecular Conformation
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Nanotechnology / instrumentation
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Nanotechnology / methods*
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Nanotubes / chemistry*
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Nanotubes / ultrastructure
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Particle Size
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Spin Labels
Substances
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Spin Labels
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Ferrosoferric Oxide