STM Studies of Near-Optimal Doped Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$

Abstract

In this paper we summarize our STM studies of the density of electronic states in nearly optimally doped Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ in zero field. We report on the inhomogeneity of the gap structure, density of states modulations with four-lattice constant period, and coherence peak modulation.

Presented at SNS'2004, Sitges,Spain, July 11-16,2004, being considered for publication in J. Phys. Chem. Solids