Lateral and Temporal Dependence of the Transport through an Atomic Gold Contact under Light Irradiation: Signature of Propagating Surface Plasmon Polaritons

被引：25

作者：

Benner, Daniel ^{[1
]}

Boneberg, Johannes ^{[1
]}

Nuernberger, Philipp ^{[1
]}

Waitz, Reimar ^{[1
]}

Leiderer, Paul ^{[1
]}

Scheer, Elke ^{[1
]}

机构：

[1] Univ Konstanz, Dept Phys, D-78464 Constance, Germany

来源：

NANO LETTERS | 2014年 / 14卷 / 09期

关键词：

Surface plasmon polariton (SPP); photo-assisted transport (PAT); atomic contact; field enhancement; polarization dependence; optical antennae; OPTICAL NEAR-FIELDS; ELECTRONIC TRANSPORT;

D O I：

10.1021/nl502165y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Metallic point contacts (MPCs) with dimensions comparable to the Fermi wavelength of conduction electrons act as electronic waveguides and might operate as plasmon transmitters. Here we present a correlated study of optical and conductance response of MPCs under irradiation with laser light. For elucidating the role of surface plasmon polaritons (SPPs), we integrate line gratings into the leads that increase the SPP excitation efficiency. By analyzing spatial, polarization, and time dependence, we identify two SPP contributions that we attribute to transmitted and decaying SPPs, respectively. The results demonstrate the role of SPPs for optically controlling the transport in metallic nanostructures and are important for designing opto-nanoelectronic devices.

引用

页码：5218 / 5223

页数：6

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