Article,

High-resolution angle-resolved photoemission study of bulk electronic states in YBa$_2$Cu$_3$O$_7-\delta$

, , , , , and .
J. Phys. Chem. Solids, 69 (12): 2967--2970 (December 2008)
DOI: 10.1016/j.jpcs.2008.06.019

Abstract

We have studied low-energy electronic structure of YBa2Cu3O7-delta using high-resolution angle-resolved photoemission spectroscopy (ARPES). By carefully tuning photon energy and polarization of incident light, we identified five different bands in the vicinity of the Fermi level, those are surface-bilayer-derived bonding and antibonding bands, their bulk counterparts, and CuO-chain-derived band, respectively. The surface bands show metallic property reflecting highly overdoped character, while bulk bands show signature of a dx2-y2-wave superconducting gap opening. The present ARPES result suggests the universality of the bulk electronic states in bilayer high-Tc superconductors.

Tags

Users

  • @nplumb

Comments and Reviews