Unusually small electrical resistance of three-dimensional nanoporous gold in external magnetic fields

T. Fujita; H. Okada; K. Koyama; K. Watanabe; S. Maekawa; M. W. Chen

doi:10.1103/PhysRevLett.101.166601

Unusually small electrical resistance of three-dimensional nanoporous gold in external magnetic fields

T. Fujita, H. Okada, K. Koyama, K. Watanabe, S. Maekawa, M. W. Chen

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

71 Citations (Scopus)

Abstract

We report the electric conductivity of three-dimensional (3D) nanoporous gold at low temperatures and in strong magnetic fields. It was found that topologically disordered 3D nanoporosity leads to extremely low magnetoresistance and anomalous temperature dependence as the characteristic length of nanoporous gold is tuned to be ∼14nm. This study underscores the importance of 3D topology of a nanostructure on electronic transport properties and has implications in manipulating electron transport by tailoring 3D nanostructures.

Original language	English
Article number	166601
Journal	Physical review letters
Volume	101
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.101.166601
Publication status	Published - 2008 Oct 16

ASJC Scopus subject areas

Physics and Astronomy(all)

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AU - Fujita, T.

AU - Okada, H.

AU - Koyama, K.

AU - Watanabe, K.

AU - Maekawa, S.

AU - Chen, M. W.

PY - 2008/10/16

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N2 - We report the electric conductivity of three-dimensional (3D) nanoporous gold at low temperatures and in strong magnetic fields. It was found that topologically disordered 3D nanoporosity leads to extremely low magnetoresistance and anomalous temperature dependence as the characteristic length of nanoporous gold is tuned to be ∼14nm. This study underscores the importance of 3D topology of a nanostructure on electronic transport properties and has implications in manipulating electron transport by tailoring 3D nanostructures.

AB - We report the electric conductivity of three-dimensional (3D) nanoporous gold at low temperatures and in strong magnetic fields. It was found that topologically disordered 3D nanoporosity leads to extremely low magnetoresistance and anomalous temperature dependence as the characteristic length of nanoporous gold is tuned to be ∼14nm. This study underscores the importance of 3D topology of a nanostructure on electronic transport properties and has implications in manipulating electron transport by tailoring 3D nanostructures.

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Unusually small electrical resistance of three-dimensional nanoporous gold in external magnetic fields

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