In this report, we study electromechanical properties of a suspended InAs nanowire (NW) resonator. At low temperatures, the NW acts as the island of a single electron transistor (SET) and we observe a strong coupling between electrons and mechanical modes at resonance; the rate of electron tunneling is approximately 10 times the resonant frequency. Above and below the mechanical resonance, the magnitude of Coulomb peaks is different and we observe Fano resonance in conductance due to the interference between two contributions to potential of the SET. The quality factor (Q) of these devices is observed ∼105 at 100 mK.
@article{arxiv.1108.3255,
title = {High Q electromechanics with InAs nanowire quantum dots},
author = {Hari S. Solanki and Shamashis Sengupta and Sudipta Dubey and Vibhor Singh and Sajal Dhara and Anil Kumar and Arnab Bhattacharya and S. Ramakrishnan and Aashish A. Clerk and Mandar M. Deshmukh},
journal= {arXiv preprint arXiv:1108.3255},
year = {2012}
}
Comments
4 pages. Supplementary material at http://www.tifr.res.in/~nano