On the gap structure of UPt$_3$: phases A and B

Дата и время публикации : 1996-09-17T15:58:45Z

Авторы публикации и институты :
Louis Taillefer (McGill University)
Brett Ellman (McGill University)
Benoit Lussier (McGill University)
Mario Poirier (Université de Sherbrooke)

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 10 pages, 3 figures, to appear in proceedings of SCES96
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: We have used thermal conduction and transverse sound attenuation to probe the anisotropy of the gap structure in two superconducting phases of UPt$_3$. For the low-temperature phase B, transverse sound has in the past provided strong evidence for a line node in the basal plane. Now, from the anisotropy of the thermal conductivity we further establish the presence of a node along the c-axis and provide information on its k-dependence. For the largely unexplored high-temperature phase A, our study of the attenuation for two directions of the polarization yields directional information on the quasiparticle spectrum, and the first clear indication of a different gap structure in the two phases.

Category: Physics