Non-linear dynamics of a driven nanomechanical single electron transistor
MetadataShow full item record
We analyze the response of a nanomechanical resonator to an external drive when it is also coupled to a single-electron transistor (SET). The interaction between the SET electrons and the mechanical resonator depends on the amplitude of the mechanical motion leading to a strongly non-linear response to the drive which is similar to that of a Duffing oscillator. We show that the average dynamics of the resonator is well-described by a simple effective model which incorporates damping and frequency renormalization terms which are amplitude dependent. We also find that for a certain range of parameters the system displays interesting bistable dynamics in which noise arising from charge fluctuations causes the resonator to switch slowly between different dynamical states.
Kirton , P G & Armour , A D 2013 , ' Non-linear dynamics of a driven nanomechanical single electron transistor ' Physical Review. B, Condensed matter and materials physics , vol 87 , no. 15 , 155407 . DOI: 10.1103/PhysRevB.87.155407
Physical Review. B, Condensed matter and materials physics
©2013 American Physical Society. Article deposited by permission of the publisher.
This work was supported by EPSRC [Grant number EP/I017818/1]
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.