Anisotropy of the Magnetic-Field—Induced Phase Transition in Superconducting U<span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">Pt</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math></span>

A. Schenstrom; M -F. Xu; Y. Hong; D. Bein; M. Levy; Bimal K. Sarma; S. Adenwalla; Z. Zhao; T. Tokuyasu; D. W. Hess; J. B. Ketterson; J. A. Sauls; D. G. Hinks

doi:10.1103/PhysRevLett.62.332

Anisotropy of the Magnetic-Field—Induced Phase Transition in Superconducting U ${Pt}_{3}$

A. Schenstrom, M -F. Xu, Y. Hong, D. Bein, M. Levy, Bimal K. Sarma, S. Adenwalla, Z. Zhao, T. Tokuyasu, D. W. Hess, J. B. Ketterson, J. A. Sauls, and D. G. Hinks

Phys. Rev. Lett. 62, 332 – Published 16 January 1989

Abstract

Measurements of the attenuation of longitudinal ultrasound in superconducting U ${Pt}_{3}$ show a peak, below $H_{c 2}$ , 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.