ANGLE-RESOLVED PHOTOEMISSION SPECTROSCOPY STUDY OF THE SUPERCONDUCTING GAP ANISOTROPY IN BI2SR2CACU2O8+X

Authors
DING H NORMAN MR CAMPUZANO JC RANDERIA M BELLMAN AF YOKOYA T TAKAHASHI T MOCHIKU T KADOWAKI K
Citation
H. Ding et al., ANGLE-RESOLVED PHOTOEMISSION SPECTROSCOPY STUDY OF THE SUPERCONDUCTING GAP ANISOTROPY IN BI2SR2CACU2O8+X, Physical review. B, Condensed matter, 54(14), 1996, pp. 9678-9681
Citations number
14
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
54
Issue
14
Year of publication
1996
Pages
9678 - 9681
Database
ISI
SICI code
0163-1829(1996)54:14<9678:APSSOT>2.0.ZU;2-6
Abstract
We report measurements of the momentum dependence of die superconducti ng gap in Bi2Sr2CaCu2O8+x with angle-resolved photoemission spectrosco py 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 comp lications from ghost bands caused by the superlattice, we find a gap f unction consistent within error bats to the form cos(k(x))-cos(k(y)) e xpected for a d-wave order parameter. Similar results are found in the X quadrant with the photon polarization chosen to enhance main band e mission over that due to ghost bands.