Mapping the Pseudogap by Fourier Transform Scanning Tunneling Spectroscopy in Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+x}$

ORAL

Abstract

The relationship between pseudogap and superconductivity in cuprate superconductors remains an important open question. To shed light on this issue, we have used Fourier-transform scanning tunneling microscopy to map quasiparticle interference (QPI) patterns as well as the ``checkerboard,'' a weak charge modulation associated with the pseudogap, as a function of doping and temperature in Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+x}$ (Bi-2212). We can extract the doping dependence of the pseudogap transition temperature T* within the superconducting dome. Our results strongly suggest that the pseudogap is a competing order.

*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

  • E.W. Hudson

    • Massachusetts Institute of Technology
    • MIT

  • 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

  • Jenny Hoffman

    • Harvard
    • Harvard University