2010/07/31 by Matthias J. Graf, Jung-Jung Su, Hari P. Dahal +2
Chemistry · Materials Science · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Hydrogen Storage and Materials #Quantum, superfluid, helium dynamics #cond-mat.mtrl-sci #cond-mat.stat-mech
paper · pdf · doi:10.1007/s10909-010-0320-2
published as Journal of Low Temperature Physics 162 (2011) 500 (9 pages) · QFS 2010 contribution; Revision has corrected typos and expanded introduction. To appear in Journal of Low Temperature Physics
arxiv created 2010/12/01 · openalex publication_date 2010/12/09 · arxiv updated 2011/04/08 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/29
Single and double torsion oscillators have been used successfully to measure the anomalous change in resonant frequency and accompanying dissipation in solid He-4. We present a glass description of the mechanical anomalies found in torsion oscillator measurements. Our results show that it is not necessary to invoke a supersolid interpretation to explain these mechanical anomalies. Previously, we demonstrated that the back-action of a glassy subsystem present in solid He-4 can account for frequency change and dissipation peak in many single torsion oscillator experiments. Here, we show that the same glassy back-action can explain the experimental results of the composite torsion oscillator developed by the Rutgers group, which measures the response of solid He-4 at the in-phase mode f1=496 Hz and out-of-phase mode f2=1173 Hz.