Strain–order-parameter coupling and phase diagrams in superconducting <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">UPt</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math></span>

G. Bruls; D. Weber; B. Wolf; P. Thalmeier; B. Lüthi; A. de Visser; A. Menovsky

doi:10.1103/PhysRevLett.65.2294

Strain–order-parameter coupling and phase diagrams in superconducting ${UPt}_{3}$

G. Bruls, D. Weber, B. Wolf, P. Thalmeier, B. Lüthi, A. de Visser, and A. Menovsky

Phys. Rev. Lett. 65, 2294 – Published 29 October 1990

Abstract

We studied elastic constants, ultrasonic attenuation, and ac susceptibility in a high-quality single crystal of ${UPt}_{3}$ in the superconducting phase. We investigated the coupling of strain and order parameter for the different elastic modes. A detailed B-T phase diagram for the superconducting phases obtained from elastic-constant measurements is given and compared with theoretical predictions.