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

页数：13

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