Quantum friction in nanomechanical oscillators at millikelvin temperatures
Authors:
- 2 December 2005
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 72 (22) , 224101
Abstract
We report low-temperature measurements of dissipation in megahertz-range, suspended, single-crystal nanomechanical oscillators. At millikelvin temperatures, both dissipation (inverse quality factor) and shift in the resonance frequency display reproducible features, similar to those observed in sound attenuation experiments in disordered glasses and consistent with measurements in larger micromechanical oscillators fabricated from single-crystal silicon. Dissipation in our single-crystal nanomechanical structures is dominated by internal quantum friction due to an estimated number of roughly 50 two-level systems, which represent both dangling bonds on the surface and bulk defects.Keywords
All Related Versions
This publication has 38 references indexed in Scilit:
- Temperature dependence of a nanomechanical switchApplied Physics Letters, 2005
- Spin-mechanical device for detection and control of spin current by nanomechanical torquePhysical Review B, 2004
- A controllable nanomechanical memory elementApplied Physics Letters, 2004
- Single spin detection by magnetic resonance force microscopyNature, 2004
- New Experimental Constraints on Non-Newtonian Forces belowPhysical Review Letters, 2003
- Upper limits to submillimetre-range forces from extra space-time dimensionsNature, 2003
- Nanostructured silicon for studying fundamental aspects of nanomechanicsJournal of Physics: Condensed Matter, 2002
- The Little Machines That are Making it BigPhysics Today, 2001
- Bioassay of prostate-specific antigen (PSA) using microcantileversNature Biotechnology, 2001
- Quantum Dissipative Systems1999