Determining the structure of the superconducting gap in Cu_{2}O_{3} 2-leg ladder materials

Дата и время публикации : 1996-09-14T23:43:37Z

Авторы публикации и институты :
N. Bulut (UCSB)
D. J. Scalapino (UCSB)

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 12 pages including 7 eps figures, uses revtex with epsf
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: Superconductivity has been recently observed in Sr_{0.4}Ca_{13.6}Cu_{24}O_{41.84} which contains quasi-one-dimensional Cu_{2}O_{3} 2-leg ladders. If, as suggested by some theories, the superconductivity arises from these 2-leg ladders, it will be important to determine the structure of the superconducting gap. In particular, does the gap in a 2-leg ladder change sign when one goes from the bonding to antibonding fermi surface points? Here we carry out phenomenological calculations of nuclear relaxation rates and inelastic neutron scattering intensity in order to provide estimates of the experimental resolution that will be required to determine the structure of the superconducting gap associated with an array of weakly coupled 2-leg ladders.

Category: Physics