Inherent Inhomogeneities in Tunneling Spectra of BSCCO Crystals in the Superconducting State
arXiv:cond-mat/0101251 · doi:10.1103/PhysRevB.64.100504
Abstract
Scanning Tunneling Spectroscopy on cleaved BSCCO(2212) single crystals reveal inhomogeneities on length-scales of $\sim$30 $Ã $. While most of the surface yields spectra consistent with a d-wave superconductor, small regions show a doubly gapped structure with both gaps lacking coherence peaks and the larger gap having a size typical of the respective pseudo-gap for the same sample.
4 pages, 4 figures