Ultrasonic Investigation of Novel Superconducting Systems

  • M. Levy
  • A. Schenstrom
  • K. J. Sun
  • B. K. Sarma


Ultrasonic attenuation measurements are reported for the superconducting, normal, and mixed states of the heavy Fermion superconductors UPt3 and URu2Si2 and in the alloys of the ternary superconductors Er1-x HoxRh4B4. A peak in attenuation in the mixed state of UPt3 may be indicative of collective excitations of the flux line lattice. A broad maximum in attenuation is found below the superconducting transition temperature of URu2Si2. An increase in attenuation in the superconducting phase of the reentrant ternary superconductors with x = 0.6 and 0.813 is ascribed to increased spin phonon interaction induced by superconducting screening of crystalline electric fields.


Mixed State Surface Acoustic Wave Superconducting State Superconducting Transition Temperature Superconducting Phase 
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Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • M. Levy
    • 1
  • A. Schenstrom
    • 1
  • K. J. Sun
    • 1
    • 2
  • B. K. Sarma
    • 1
  1. 1.Physics DepartmentUniversity of Wisconsin-MilwaukeeMilwaukeeUSA
  2. 2.NASA-Langley Research Center MS 231HamptonUSA

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