Effects of electron-phonon coupling on the d-wave pairing superconducting phase

ORAL

Abstract

Recent experimental evidence has shown that the electron-phonon coupling could play a role in the formation of a d-wave pairing superconducting phase. Using a multiscale functional renormalization group (MFRG) technique, we study the effects of electron-phonon coupling in the two-dimensional Hubbard model with a band structure appropriate for the cuprate superconductors. We show that a momentum-independent electron- phonon coupling does not favor d-wave pairing but instead leads to the s-wave pairing and incommensurate density wave ordering.

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Authors

  • Ka-Ming Tam

    • Boston University

  • Shan-Wen Tsai

    • University of California, Riverside, Physics Department
    • University of California, Riverside
    • University of California Riverside

  • Antonio Castro Neto

    • Boston University
    • Department of Physics, Boston University
    • Boston University, Physics Department
    • Department of Physics. Boston University. 590 Commonwealth Av. Boston MA02115
    • Department of Physics, Harvard University, Cambridge, USA and Department of Physics, Boston University, Boston,USA
    • Department of Physics, Boston University, Boston, MA 02215
    • Physics Dept, Boston University

  • David K. Campbell

    • Boston University