Hunds Rule Theory for Heavy Fermion Superconductors

Дата и время публикации : 1993-05-12T22:49:22Z

Авторы публикации и институты :
M. R. Norman

Ссылка на журнал-издание: Phys Rev Lett 72, 2077 (1994)
Коментарии к cтатье: revised manuscript, 15 pages (Plain TeX with macros), plus 1 postscript figure
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: In this paper, a generalization of standard spin fluctuation theory is considered which takes into account orbital degeneracy effects which are critical for describing f electrons. This theory leads to an instability for a superconducting pair state which obeys Hunds rules. Such a state has L=5, S=1, and J=4. The degeneracy of this state is broken by crystalline effects, and realistic calculations for $UPt_3$ find a resultant pair state with $Gamma_6^-$ symmetry, consistent with current experimental constraints.

Category: Physics