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Abstract:
This paper summarizes the results of a comprehensive analysis of the thermodynamic and
transport data for the superconducting phases of UPt3. Calculations of
the transverse sound attenuation as a function of temperature, frequency,
polarization, and disorder are presented for the leading models of the
superconducting order parameter. Measurements of the specific heat, thermal
conductivity, and transverse sound attenuation place strong constraints
on the orbital symmetry of the superconducting order parameter. We show
that the superconducting A and B phases are in excellent agreement with
pairing states belonging to the odd-parity E2u representation.
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