Novel spectral features of nanoelectromechanical systems

作者：Tahir M; MacKinnon A; Schwingenschlogl U^*

来源：Scientific Reports, 2014, 4(1): 4035.

DOI：10.1038/srep04035

Electron transport through a quantum dot or single molecule coupled to a quantum oscillator is studied by the Keldysh nonequilibrium Green%26apos;s function formalism to obtain insight into the quantum dynamics of the electronic and oscillator degrees of freedom. We tune the electronic level of the quantum dot by a gate voltage, where the leads are kept at zero temperature. Due to the nonequilibrium distribution of the electrons in the quantum dot, the spectral function becomes a function of the gate voltage. Novel spectral features are identified for the ground and excited states of nanomechanical oscillators that can be used to enhance the measurement sensitivity.

• 出版日期2014-2-17
• 单位KAUST