2007/08/21 by A. C. Bleszynski Jayich, W. E. Shanks, J. G. E. Harris · 1 citation
Physics and Astronomy · #cond-mat.other
paper · pdf · doi:10.1063/1.2821828
arxiv created 2007/08/21 · arxiv updated 2009/12/01
We have used two types of thermometry to study thermal fluctuations in a microcantilever-based system below 1 K. We measured the temperature of a cantilever's macroscopic degree-of-freedom (via the Brownian motion of its lowest flexural mode) and its microscopic degrees-of-freedom (via the electron temperature of a metal sample mounted on the cantilever). We also measured both temperatures' response to a localized heat source. We find it possible to maintain thermal equilibrium between these two temperatures and a refrigerator down to at least 300 mK. These results are promising for ongoing experiments to probe quantum effects using micromechanical devices.