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arXiv · 2107.05773

Phonon-Mediated Long-Range Attractive Interaction in One-Dimensional Cuprates

Yao Wang·Zhuoyu Chen·Tao Shi·Brian Moritz·Zhi-Xun Shen·Thomas P. Devereaux
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Abstract

Establishing a minimal microscopic model for cuprates is a key step towards the elucidation of a high-$T_c$ mechanism. By a quantitative comparison with a recent \emph{in situ} angle-resolved photoemission spectroscopy measurement in doped 1D cuprate chains, our simulation identifies a crucial contribution from long-range electron-phonon coupling beyond standard Hubbard models. Using reasonable ranges of coupling strengths and phonon energies, we obtain a strong attractive interaction between neighboring electrons, whose strength is comparable to experimental observations. Nonlocal couplings play a significant role in the mediation of neighboring interactions. Considering the structural and chemical similarity between 1D and 2D cuprate materials, this minimal model with long-range electron-phonon coupling will provide important new insights on cuprate high-$T_C$ superconductivity and related quantum phases.

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Yao Wang, Zhuoyu Chen, Tao Shi, Brian Moritz, Zhi-Xun Shen, Thomas P. Devereaux. 2021-11-21. Phonon-Mediated Long-Range Attractive Interaction in One-Dimensional Cuprates. https://doi.org/10.1103/physrevlett.127.197003

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