Role of the chemical bonding for the time-dependent electron transport through an interacting quantum dot

Ali Goker; Zhiyong Zhu; Aurelien Manchon; Udo Schwingenschlögl

doi:10.1016/j.cplett.2011.04.086

Role of the chemical bonding for the time-dependent electron transport through an interacting quantum dot

Ali Goker, Zhiyong Zhu, Aurelien Manchon, Udo Schwingenschlögl

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

A combination of ab initio and many-body calculations is utilized to determine the effects of the bonding in Au electrodes on the time dependent current through a quantum dot suddenly shifted into the Kondo regime by a gate voltage. For an asymmetrically coupled system the instantaneous conductance exhibits fluctuations. The frequencies of the fluctuations turn out to be proportional to the energetic separation between the dominating peaks in the density of states and the Fermi level. The chemical bonding in the electrodes, thus, drastically alters the transient current, which can be accessed by ultrafast pump-probe techniques. © 2011 Elsevier B.V. All rights reserved.

Original language	English (US)
Pages (from-to)	48-50
Number of pages	3
Journal	Chemical Physics Letters
Volume	509
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2011.04.086
State	Published - Jun 2011

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KAUST Repository Item: Exported on 2020-10-01

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/j.cplett.2011.04.086

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title = "Role of the chemical bonding for the time-dependent electron transport through an interacting quantum dot",

abstract = "A combination of ab initio and many-body calculations is utilized to determine the effects of the bonding in Au electrodes on the time dependent current through a quantum dot suddenly shifted into the Kondo regime by a gate voltage. For an asymmetrically coupled system the instantaneous conductance exhibits fluctuations. The frequencies of the fluctuations turn out to be proportional to the energetic separation between the dominating peaks in the density of states and the Fermi level. The chemical bonding in the electrodes, thus, drastically alters the transient current, which can be accessed by ultrafast pump-probe techniques. {\textcopyright} 2011 Elsevier B.V. All rights reserved.",

author = "Ali Goker and Zhiyong Zhu and Aurelien Manchon and Udo Schwingenschl{\"o}gl",

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AU - Goker, Ali

AU - Zhu, Zhiyong

AU - Manchon, Aurelien

AU - Schwingenschlögl, Udo

N1 - KAUST Repository Item: Exported on 2020-10-01

PY - 2011/6

Y1 - 2011/6

N2 - A combination of ab initio and many-body calculations is utilized to determine the effects of the bonding in Au electrodes on the time dependent current through a quantum dot suddenly shifted into the Kondo regime by a gate voltage. For an asymmetrically coupled system the instantaneous conductance exhibits fluctuations. The frequencies of the fluctuations turn out to be proportional to the energetic separation between the dominating peaks in the density of states and the Fermi level. The chemical bonding in the electrodes, thus, drastically alters the transient current, which can be accessed by ultrafast pump-probe techniques. © 2011 Elsevier B.V. All rights reserved.

AB - A combination of ab initio and many-body calculations is utilized to determine the effects of the bonding in Au electrodes on the time dependent current through a quantum dot suddenly shifted into the Kondo regime by a gate voltage. For an asymmetrically coupled system the instantaneous conductance exhibits fluctuations. The frequencies of the fluctuations turn out to be proportional to the energetic separation between the dominating peaks in the density of states and the Fermi level. The chemical bonding in the electrodes, thus, drastically alters the transient current, which can be accessed by ultrafast pump-probe techniques. © 2011 Elsevier B.V. All rights reserved.

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VL - 509

SP - 48

EP - 50

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Role of the chemical bonding for the time-dependent electron transport through an interacting quantum dot

Abstract

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