Inelastic electron-tunneling spectroscopy of nanoporous gold films

被引：4

作者：

Liu, H. W. ^{[1
]}

Nishitani, R. ^{[2
]}

Fujita, T. ^{[3
,4
]}

Li, W. ^{[5
]}

Zhang, L. ^{[3
]}

Lang, X. Y. ^{[3
]}

Richard, P. ^{[6
]}

Nakayama, K. S. ^{[3
]}

Chen, X. ^{[5
]}

Chen, M. W. ^{[3
]}

Xue, Q. K. ^{[3
,5
,6
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[2] Kyushu Inst Technol, Dept Basic Sci, Fukuoka 8048550, Japan

[3] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

[4] JST, PRESTO, Kawaguchi, Saitama 3320012, Japan

[5] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

[6] Collaborat Innovat Ctr Quantum Matter, Beijing, Peoples R China

来源：

PHYSICAL REVIEW B | 2014年 / 89卷 / 03期

基金：

美国国家科学基金会;

关键词：

ENHANCED RAMAN-SCATTERING; PHOTON-EMISSION; CHARACTERISTIC LENGTH; EXCITATION; SCALE;

D O I：

10.1103/PhysRevB.89.035426

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigated the localized electronic properties of nanoporous gold films by using an ultrahigh vacuum scanning tunneling microscope at low temperature (4.2 K). Second derivative scanning tunneling spectroscopy shows the plasmon peaks of the nanoporous gold films, which are excited by inelastic tunneling electrons. We propose that the nanorod model is appropriate for nanoporous gold studies at the nanometer scale. These results are supported by a three-dimensional electron tomography analysis and theoretical calculations of nanoporous gold with an ellipsoidal shape.

引用

页数：5

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