In this paper, we summarize our Scanning Tunnelling Microscope (STM) studies of the density of electronic states in nearly optimally doped Bi 2Sr2CaCu2O8+δ 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.
Bibliographical noteFunding Information:
We thank Steven Kivelson for many helpful discussions. Work supported by the Department of Energy grant DE-FG03-01ER45925.
- C. Scanning tunnelling microscopy (STM)