Coupling between planes and chains in YBa2Cu3O7 : a possible solution for the order parameter controversy

Дата и время публикации : 1995-03-29T13:24:05Z

Авторы публикации и институты :
R. Combescot
X. Leyronas

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 13 pages, revtex, 2 uucoded figures
Первичная категория: cond-mat

Все категории : cond-mat, supr-con

Краткий обзор статьи: We propose to explain the contradictory experimental evidence about the symmetry of the order parameter in $YBa_{2}Cu_{3}O_{7} $ by taking into account the coupling between planes and chains. This leads to an anticrossing of the plane and chain band. We include an attractive pairing interaction within the planes and a repulsive one between planes and chains, leading to opposite signs for the order parameter on planes and chains, and to nodes of the gap because of the anticrossing. Our model blends s-wave and d-wave features, and provides a natural explanation for all the contradictory experiments

Category: Physics