Inherent inhomogeneities in tunneling spectra of Bi2Sr2CaCu2O8−x crystals in the superconducting state
C. Howald, P. Fournier, A. Kapitulnik
DOI 10.1103/PhysRevB.64.100504 · Physical Review B
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Abstract
Scanning tunneling spectroscopy on cleaved BSCCO(2212) single crystals reveals inhomogeneities on length scales of ∼30 Å. 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 pseudogap for the same sample.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 80 | Pressure not reported | unknown |
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