Tunable backaction of a DC SQUID on an integrated micromechanical resonator

M. Poot, S. Etaki, I. Mahboob, K. Onomitsu, H. Yamaguchi, Ya M. Blanter, H. S.J. Van Der Zant

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


We have measured the backaction of a dc superconducting quantum interference device (SQUID) position detector on an integrated 1 MHz flexural resonator. The frequency and quality factor of the micromechanical resonator can be tuned with bias current and applied magnetic flux. The backaction is caused by the Lorentz force due to the change in circulating current when the resonator displaces. The experimental features are reproduced by numerical calculations using the resistively and capacitively shunted junction model.

Original languageEnglish
Article number207203
JournalPhysical Review Letters
Issue number20
StatePublished - 10 Nov 2010
Externally publishedYes


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