Semiclassical dynamics of nanoelectromechanical systems

被引:46
作者
Hussein, R. [1 ]
Metelmann, A. [1 ]
Zedler, P. [1 ]
Brandes, T. [1 ]
机构
[1] Tech Univ Berlin, Inst Theoret Phys, D-10623 Berlin, Germany
来源
PHYSICAL REVIEW B | 2010年 / 82卷 / 16期
关键词
SINGLE-ELECTRON TRANSISTOR; NANOMECHANICAL RESONATOR; QUANTUM; DRIVEN;
D O I
10.1103/PhysRevB.82.165406
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We investigate the dynamics of a single phonon (oscillator) mode linearly coupled to an electronic few-level system in contact with external particle reservoirs (leads). A stationary electronic current through the system generates nontrivial dynamical behavior of the oscillator. Using Feynman-Vernon influence functional theory, we derive a Langevin equation for the oscillator trajectory that is nonperturbative in the system-leads coupling and from which we extract effective oscillator potentials and friction coefficients. For the two simplest cases of a single and two coupled electronic levels, we discuss various regimes of the oscillator dynamics.
引用
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页数:13
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