Yuri
Pashkin
NEC
We have suspended an Al based single-electron
transistor whose island can resonate freely between the source and drain leads
forming the clamps. In addition to the regular side gate, a bottom gate with a
larger capacitance to the SET island is placed under it to increase the SET
coupling to mechanical motion. The device can be considered as a doubly clamped
Al beam that can transduce mechanical vibrations into variations of the SET
current. Our simulations based on
the orthodox model, with the SET parameters estimated from the experiment,
reproduce the observed transport characteristics in detail.