Current noise spectrum of a quantum shuttle
نویسندگان
چکیده
منابع مشابه
Current noise spectrum of a quantum shuttle
We present a method for calculating the full current noise spectrum S(ω) for the class of nano-electromechanical systems (NEMS) that can be described by a Markovian generalized master equation. As a specific example we apply the method to a quantum shuttle. The noise spectrum of the shuttle has peaks at integer multiples of the mechanical frequency, which is slightly renormalized. The renormali...
متن کاملShot noise of a quantum shuttle.
We formulate a theory for shot noise in quantum nanoelectromechanical systems. As a specific example, the theory is applied to a quantum shuttle, and the zero-frequency noise, measured by the Fano factor F, is computed. F reaches very low values (F approximately 10(-2)) in the shuttling regime even in the quantum limit, confirming that shuttling is universally a low noise phenomenon. In approac...
متن کاملShot-noise-induced random telegraph noise in shuttle current.
Random telegraph noise in the electric current produced by shot noise is predicted for an array of movable colloid particles by Monte Carlo and molecular dynamics calculations. The electron transport is attributed to the shuttle mechanism where moving colloid particles carry charges. The colloid-particle motion induced by the source-drain voltage shows periodic and/or quasiperiodic vibrations, ...
متن کاملDetecting quantum-coherent nanomechanical oscillations using the current-noise spectrum of a double quantum dot
Neill Lambert1,* and Franco Nori1,2 1Advanced Science Institute, The Institute of Physical and Chemical Research (RIKEN), Saitama 351-0198, Japan 2Department of Physics, Center for Theoretical Physics, Applied Physics Program, Center for the Study of Complex Systems, The University of Michigan, Ann Arbor, Michigan 48109-1040, USA Received 1 September 2008; revised manuscript received 4 November...
متن کاملCurrent-oscillator correlation and Fano factor spectrum of quantum shuttle with finite bias voltage and temperature.
A general master equation is derived to describe an electromechanical single-dot transistor in the Coulomb blockade regime. In the equation, Fermi distribution functions in the two leads are taken into account, which allows one to study the system as a function of bias voltage and temperature of the leads. Furthermore, we treat the coherent interaction mechanism between electron tunneling event...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physica E: Low-dimensional Systems and Nanostructures
سال: 2005
ISSN: 1386-9477
DOI: 10.1016/j.physe.2005.05.040