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