Contrasting electron-phonon interaction between electron- and hole-doped cuprates
Abstract
Spin- and charge-lattice interactions are potential key factors in the microscopic mechanism of high-temperature superconductivity in cuprates. Although both interactions can dramatically shape the low-energy electronic structure, their phenomenological roles in superconductivity are usually investigated independently. Employing angle-resolved photoemission spectroscopy, we reveal the spectroscopic fingerprint of short-range antiferromagnetic order in conjunction with enhanced electron-phonon interaction in the electron-doped cuprate superconductor . The observed mode coupling exhibits a strong momentum dependence that is in striking contrast to the node-antinode dichotomy previously observed in the hole-doped cuprates. Our results reveal an intimate relationship between electron-phonon coupling and antiferromagnetic fluctuations, which collectively sets the stage for unconventional superconductivity in the electron-doped cuprates.
Cite
@article{arxiv.2408.01685,
title = {Contrasting electron-phonon interaction between electron- and hole-doped cuprates},
author = {Qinda Guo and Ke-Jun Xu and Magnus H. Berntsen and Antonija Grubišić-Čabo and Maciej Dendzik and Thiagarajan Balasubramanian and Craig Polley and Su-Di Chen and Junfeng He and Yu He and Costel R. Rotundu and Young S. Lee and Makoto Hashimoto and Dong-Hui Lu and Thomas P. Devereaux and Dung-Hai Lee and Zhi-Xun Shen and Oscar Tjernberg},
journal= {arXiv preprint arXiv:2408.01685},
year = {2024}
}