✦ LIBER ✦

Constraints on the order parameter of superconducting UPt3 from the phase diagram

✍ Scribed by Anupam Garg; Ding-Chuan Chen

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 160 KB
Volume: 194-196
Category: Article
ISSN: 0921-4526
DOI: 10.1016/0921-4526(94)91508-3

No coin nor oath required. For personal study only.

✦ Synopsis

The tetracritical point seen in the H-T phase diagram of UPt3 for several orientations of H strongly constrains Ginzburg-Landau (GL) theories, as the GL "Hamiltonian" must have a conserved quantity Q. A two-component vector order parameter model has a Q for HNc , but no tetracritical point. Among accidentally nearly degenerate like-parity order parameters, only the case where one behaves as an A and the other as a B representation of D6h (the point group of UPta) is allowed. This model is studied and compared to experiment.

📜 SIMILAR VOLUMES

On the superconducting phase diagram of

On the superconducting phase diagram of heavy-fermion UPt3

✍ A. de Visser; N.H. van Dijk; J.J.M. Franse; L. Taillefer 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 148 KB

The superconducting phase diagram of heavy-fermion UPt 3 has been investigated by means of sensitive dilatometry. The thermodynamic analysis indicates that all the phase lines are of second order. Ehrenfest relations reveal that the C phase is the stable phase under uniaxial pressure (p II e).

What is the superconducting order parame

What is the superconducting order parameter for UPt3?

✍ M.R. Norman 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 265 KB

The author observed that information inferred from current interpretations of experimental data for the heavy, electron superconductor UPh constrain the order parameter to be of Ez. symmetry. Possible objections to the current interpretations will be given.

Phase diagram of superconducting UPt3 by

Phase diagram of superconducting UPt3 by the magnetocaloric effect

✍ B. Bogenberger; H.v. Löhneysen; T. Trappmann; L. Taillefer 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 218 KB

Superconducting phase diagrams of UPt3 f

Superconducting phase diagrams of UPt3 from ultrasonic velocity measurements

✍ S.-W. Lin; J.B. Ketterson; M. Levy; Bimal K. Sarma 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 700 KB

Uniaxial pressure dependence of the supe

Uniaxial pressure dependence of the superconducting phase diagram of UPt3

✍ N.H. van Dijk; A. de Visser; J.J.M. Franse; L. Taillefer 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 194 KB

The superconducting phases of UPt3

✍ H.v. Löhneysen 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 844 KB

The heavy-fermion superconductor UPt 3 shows many indications of unconventional superconductivity. In particular, the multiplicity of superconducting phases calls for an explanation in terms of a multi-component order parameter. As will be reviewed in this article, these phases have been mapped out