Charge transport through a molecule driven by a high-frequency field

被引：43

作者：

Kohler, S ^{[1
]}

Camalet, S ^{[1
]}

Strass, M ^{[1
]}

Lehmann, J ^{[1
]}

Ingold, GL ^{[1
]}

Hänggi, P ^{[1
]}

机构：

[1] Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany

来源：

CHEMICAL PHYSICS | 2004年 / 296卷 / 2-3期

关键词：

quantum transport; driven systems; noise;

D O I：

10.1016/j.chemphys.2003.09.023

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We study the current and the associated noise for the transport through a two-site molecule driven by an external oscillating field. Within a high-frequency approximation, the time-dependent Hamiltonian is mapped to a static one with effective parameters that depend on the driving amplitude and frequency. This analysis allows an intuitive physical picture explaining the nontrivial structure found in the noise properties as a function of the driving amplitude. The presence of dips in the Fano factor permits a control of the noise level by means of an appropriate external driving. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：243 / 249

页数：7

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