A `Superglass' State in Solid $^{4}$He

ORAL

Abstract

We study the relaxation dynamics of both the resonance frequency $f(T)$ and the dissipation rate $D(T)=Q^{-1}(T)$ of a torsional oscillator (TO) containing solid $^{4}$He. Abruptly at the temperature $T*$ characteristic of the proposed supersolid phase, the relaxation times within $f(T)$ and $D(T)$ begin to increase precipitously together. Moreover, for all $T

*These studies are supported by National Science Foundation under Grant DMR 434801; B.H. acknowledges support by NSERC; M.Y. acknowledges support from the JSPS

–

Authors

  • Benjamin Hunt

    • Cornell University

  • Ethan Pratt

    • Cornell University

  • Vikram Gadagkar

    • Cornell University

  • Minoru Yamashita

    • Kyoto University

  • Alexander V. Balatsky

    • T-Division, Center for Integrated Nanotechnologies, Los Alamos National Lab

  • J. C. Davis

    • Cornell Univ.
    • Cornell University and Brookhaven National Laboratory
    • Cornell University
    • LASSP, Cornell Univ.
    • Cornell University, Brookhaven National Laboratory, University of St Andrews