Charge transport in a quantum electromechanical system

Wahyu Utami, D., Hsi-Sheng, Goan. and Milburn, G. J. (2004) Charge transport in a quantum electromechanical system. Physical Review B, 70 7: 075303-1-075303-10. doi:10.1103/PhysRevB.70.075303

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Author Wahyu Utami, D.
Hsi-Sheng, Goan.
Milburn, G. J.
Title Charge transport in a quantum electromechanical system
Journal name Physical Review B   Check publisher's open access policy
ISSN 1098-0121
Publication date 2004-08-10
Year available 2004
Sub-type Article (original research)
DOI 10.1103/PhysRevB.70.075303
Open Access Status File (Publisher version)
Volume 70
Issue 7
Start page 075303-1
End page 075303-10
Total pages 10
Editor P. D. Adams
Place of publication New York, U.S.A.
Publisher The American Physical Society
Collection year 2004
Language eng
Subject C1
240203 Condensed Matter Physics - Electronic and Magnetic Properties; Superconductivity
780102 Physical sciences
Abstract We describe a quantum electromechanical system comprising a single quantum dot harmonically bound between two electrodes and facilitating a tunneling current between them. An example of such a system is a fullerene molecule between two metal electrodes [Park et al., Nature 407, 57 (2000)]. The description is based on a quantum master equation for the density operator of the electronic and vibrational degrees of freedom and thus incorporates the dynamics of both diagonal (population) and off diagonal (coherence) terms. We derive coupled equations of motion for the electron occupation number of the dot and the vibrational degrees of freedom, including damping of the vibration and thermo-mechanical noise. This dynamical description is related to observable features of the system including the stationary current as a function of bias voltage
Q-Index Code C1
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Created: Wed, 15 Aug 2007, 04:18:52 EST