Spatial Variations in the Fermi Surface of Bi-2212

ORAL

Abstract

In cuprate superconductors, scanning tunneling microscopy can be used to see variations in the Fermi surface on a nanometer length scale caused by doping inhomogeneity. Prior STM studies show that the local wavelength of the checkerboard, a weak charge modulation ascribed to antinodal Fermi surface nesting, varies with the size of the pseudogap in Bi$_2$Sr$_2$CuO$_{6+\delta}$ (Bi-2201) [1]. Here we report similar STM measurements in Bi-2212. We therefore confirm the local relationship between pseudogap energy and charge ordering wavevector in a second high-Tc superconductor.\\[4pt] [1] W. D. Wise, et al. Nature Physics 5, 213 (2009).

*We acknowledge support from AFOSR PECASE grant FA9550-06-1-0531, AFOSR DURIP grant FA9550-06-1-0359, NSF Career grant DMR-0847433 and NSF grant DMR-0904400.

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Authors

  • E Main

    • Harvard

  • A.E. Pivonka

    • Harvard

  • I. Zeljkovic

    • Harvard

  • Genda Gu

    • Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory
    • Condensed Matter Physics and Materials Science, Brookhaven National Laboratory (BNL), Upton, NY 11973
    • Brookhaven National Laboratory
    • Brookhaven
    • Brookhaven National Lab

  • E.W. Hudson

    • Massachusetts Institute of Technology
    • MIT

  • Jenny Hoffman

    • Harvard
    • Harvard University