2004/03/31 by T. P. Devereaux, T. Cuk, Z. -X. Shen +1 · 1 citation
Physics and Astronomy · #cond-mat.supr-con #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.93.117004
published as Phys. Rev. Lett. 93, 117004 (2004) · 5 pages, 3 color figures (higher quality than originally submitted, minor editorial changes, to appear in Phys. Rev. Lett.)
arxiv created 2004/08/02 · arxiv updated 2009/12/01
We explore manifestations of electron-phonon coupling on the electron spectral function for two phonon modes in the cuprates exhibiting strong renormalizations with temperature and doping. Applying simple symmetry considerations and kinematic constraints, we find that the out-of-plane, out-of-phase O buckling mode (B1g) involves small momentum transfers and couples strongly to electronic states near the anti-node while the in-plane Cu-O breathing modes involve large momentum transfers and couples strongly to nodal electronic states. Band renormalization effects are found to be strongest in the superconducting state near the anti-node, in full agreement with angle-resolved photoemission spectroscopy (ARPES) data.