ARPES Study of the Superconducting Gap Anisotropy in Bi_2Sr_2CaCu_2O_8+x

Дата и время публикации : 1996-03-06T19:47:26Z

Авторы публикации и институты :
H. Ding
M. R. Norman
J. C. Campuzano
M. Randeria
A. F. Bellman
T. Yokoya
T. Takahashi
T. Mochiku
K. Kadowaki

Ссылка на журнал-издание: Phys Rev B 54, R9678 (1996)
Коментарии к cтатье: 3 pages, revtex, 4 postscript figures
Первичная категория: cond-mat

Все категории : cond-mat, supr-con

Краткий обзор статьи: We report measurements of the momentum dependence of the superconducting gap in Bi_2Sr_2CaCu_2O_{8+x} (Bi2212) with angle-resolved photoemission spectroscopy using a dense sampling of the Brillouin zone in the vicinity of the Fermi surface. In the Y quadrant of the zone, where there are no complications from ghost bands caused by the superlattice, we find a gap function consistent within error bars to the form cos(k_x)-cos(k_y) expected for a d-wave order parameter. Similar results are found in the X quadrant with the photon polarization chosen to enhance main band emission over that due to ghost bands.

Category: Physics