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

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

Phys. Rev. Lett. 127, 197003 – Published 3 November 2021

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 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.

Received 29 June 2021
Accepted 22 September 2021

DOI:https://doi.org/10.1103/PhysRevLett.127.197003

Physics Subject Headings (PhySH)

Electron-phonon coupling Optical phonons Superconducting gap Superconducting order parameter Superconducting phase transition s-wave

Cuprates High-temperature superconductors

BCS theory Methods in superconductivity

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Yao Wang ^1,*, Zhuoyu Chen ^2,3,4, Tao Shi ^5,6, Brian Moritz ³, Zhi-Xun Shen^2,3,4, and Thomas P. Devereaux ^2,3,7,†

¹Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29631, USA
²Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA
³Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
⁴Departments of Physics and Applied Physics, Stanford University, Stanford, California 94305, USA
⁵CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
⁶CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100049, China
⁷Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, USA