Authors: Matthias J Graf JungJung Su Hari P Dahal I Grigorenko Zohar Nussinov
Publish Date: 2010/12/10
Volume: 162, Issue: 5-6, Pages: 500-508
Abstract
Single and double torsion oscillators have been used to measure the anomalous change in resonant frequency and accompanying dissipation in solid 4He 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 backaction of a glassy subsystem present in solid 4He can account for frequency change and dissipation peak in single torsion oscillator experiments Here we show that the same glassy backaction can explain the experimental results of the composite torsion oscillator developed by the Rutgers group which measures the response of solid 4He at the inphase mode f 1=496 Hz and outofphase mode f 2=1173 Hz
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