Relating STM, ARPES, and transport in the cuprate superconducting state

• Published in: The Journal of physics and chemistry of solids Vol. 67; no. 1; pp. 6 - 10
• Main Authors: Scalapino, D.J., Nunner, T., Hirschfeld, P.J.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Oxford Elsevier Ltd 2006; Elsevier
• Subjects: C. Photoelectron Spectroscopy; C. Scanning tunnelling microscopy (STM); Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cuprates superconductors (high tc and insulating parent compounds); D. Thermal conductivity; D. Transport properties; Exact sciences and technology; Physics; Properties of type I and type II superconductors; Superconductivity; Transport properties (electric and thermal conductivity, thermoelectric effects, etc.); C. Photoelectron Spectroscopy; C. Scanning tunnelling microscopy (STM); D. Transport properties; D. Thermal conductivity; Doping; Superconductivity; Small angle scattering; Angle resolved photoemission spectroscopy; Cuprates; Defects; BCS theory; Scanning tunneling microscopy; Microwave conductivity; High-Tc superconductors; Thermal conductivity; Transport processes; Microstructure
• ISSN: 0022-3697; 1879-2553
• DOI: 10.1016/j.jpcs.2005.10.131

We discuss a wealth of data from various types of experiments which together suggest that the superconducting state of optimally to over-doped BSCCO-2212 can be well-described by the BCS theory with a d-wave gap together with small-angle scattering from out-of-plane defects. These include scanning tunnelling Fourier transform spectroscopy observation of nanoscale inhomogeneity in the local gap edge position, the narrowing of the antinodal ARPES spectrum when BSCCO becomes superconducting, as well as the behavior of the microwave and thermal conductivities. We suggest that the large amount of small-angle scattering in BSCCO can account for the differences between the superconducting properties of BSCCO and YBCO.