Influence of laser light on electronic transport through atomic-size contacts

被引：65

作者：

Guhr, D. C. ^{[1
]}

Rettinger, D. ^{[1
]}

Boneberg, J. ^{[1
]}

Erbe, A. ^{[1
]}

Leiderer, P. ^{[1
]}

Scheer, E. ^{[1
]}

机构：

[1] Univ Konstanz, Fachbereich Phys, D-78457 Constance, Germany

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.99.086801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This Letter reports on the influence of laser irradiation onto the electrical conductance of gold nanocontacts established with the mechanically controllable break-junction technique. We concentrate on the study of reversible conductance changes which can be as high as 200%. We investigate the dependence on the initial conductance of the contacts, and on the wavelength, the intensity, and the position of the laser spot with respect to the sample. Under most conditions an enhancement of the conductance is observed. Several physical mechanisms which might contribute to the observed effect including thermal expansion, rectification, plasmon excitation, and photon-assisted transport are discussed, among which the two latter ones are most likely the dominating ones.

引用

页数：4

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