Anisotropy of the Magnetic-Field-Induced Phase Transition in Superconducting UPt₃

Authors

A. Schenstrom, University of Wisconsin - Milwaukee
M-F. Xu, University of Wisconsin - Milwaukee
Y. Hong, University of Wisconsin - Milwaukee
D. Bein, University of Wisconsin - Milwaukee
M. Levy, University of Wisconsin - Milwaukee
Bimal K. Sarma, University of Wisconsin - Milwaukee
Shireen Adenwalla, University of Nebraska-LincolnFollow
Z. Zhao, Northwestern University
T. Tokuyasu, Northwestern University
D. W. Hess, Northwestern University
J. B. Ketterson, Northwestern UniversityFollow
J. A. Sauls, Northwestern University
D. G. Hinks, Argonne National Laboratory

Date of this Version

1989

Citation

Physical Review Letters Volume 62, Number 3, January 1989

Comments

Copyright 1989 The American Physical Society

Abstract

Measurements of the attenuation of longitudinal ultrasound in superconducting UPt₃ show a peak, below H_c2, which depends strongly on the orientation of the field relative to the c axis. We propose an explanation of this peak in terms of a vortex phase transition in an unconventional superconducting state, which is consistent with recent neutron-scattering data.