Unusually Small Electrical Resistance of Three-Dimensional Nanoporous Gold in External Magnetic Fields

被引：77
|
作者：
Fujita, T. [1 ]
Okada, H. [2 ,3 ]
Koyama, K. [2 ]
Watanabe, K. [2 ]
Maekawa, S. [2 ]
Chen, M. W. [1 ,2 ]
机构：
[1] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan
[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
[3] Nihon Univ, Coll Humanities & Sci, Dept Phys, Tokyo 1568550, Japan
来源：
PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 16期
关键词：
D O I：
10.1103/PhysRevLett.101.166601
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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 similar to 14 nm. 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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页数：4
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