Quantum phase diagram of the SSHH model at 1/8 doping. (IMAGE)
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The quantum phase diagram of the Su–Schrieffer–Heeger-Hubbard model as a function of SSH electron–phonon coupling λ and Hubbard U, obtained from our state-of-the-art density-matrix renormalization group (DMRG) studies. Here, the phonon frequency ωD=5 and hole doping concentration δ=1/8. Robust d-wave superconductivity (SC) is obtained by the interplay between strong U and moderate λ.
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