Parametric Resonance in Nanoelectromechanical Single Electron Transistors
Artikel i vetenskaplig tidskrift, 2011

We show that the coupling between single-electron charging and mechanical motion in a nanoelectromechanical single-electron transistor can be utilized in a novel parametric actuation scheme. This scheme, which relies on a periodic modulation of the mechanical resonance frequency through an alternating source drain voltage, leads to a parametric instability and emergence of mechanical vibrations in a limited range of modulation amplitudes. Remarkably, the frequency range where instability occurs and the maximum oscillation amplitude, depend weakly on the damping in the system. We also show that a weak parametric modulation increases the effective quality factor and amplifies the system's response to the conventional actuation that exploits an AC gate signal.

parametric resonance

nanotube

mechanical resonators

instability

Carbon nanotubes

nanoelectromechanical systems

single-electron transistor

parametric

Författare

Daniel Midtvedt

Chalmers, Teknisk fysik, Kondenserade materiens teori

Yury Tarakanov

Chalmers, Teknisk fysik, Kondenserade materiens teori

Jari Kinaret

Chalmers, Teknisk fysik, Kondenserade materiens teori

Nano Letters

1530-6984 (ISSN) 1530-6992 (eISSN)

Vol. 11 1439-1442

Styrkeområden

Nanovetenskap och nanoteknik

Ämneskategorier

Fysik

DOI

10.1021/nl103663m