A review of electron–phonon coupling seen in the high‐Tc superconductors by angle‐resolved photoemission studies (ARPES)

Abstract

AbstractThis issue of pss (b) – basic solid state physics contains a collection of Review Articles on the rather controversially discussed topic of Electron–Phonon Interaction in High‐Temperature Superconductors, guest‐edited by Miodrag Kulić, Johann Wolfgang Goethe‐Universität Frankfurt/Main, Germany, with a Preface written by V. L. Ginzburg and E. G. Maksimov [1].The cover picture, taken from the review [2] by T. Cuk et al., shows plots of the electron–phonon coupling vertex, g2(k, k′), where k, k′ are the initial and final electron momentum for electrons scattered by the bond‐buckling phonon B1g (the out‐of‐phase vibration of the in‐plane oxygen) in a tight‐binding model of the copper–oxygen plane. The momentum dependence of this vertex, along with the d‐wave superconducting gap and the van Hove singularity at the anti‐node, accounts for the momentum dependence of the collective mode coupling seen in angle‐resolved photoemission data on Bi2212.The present issue also sees the start of our rapid research letters, the fastest peer‐reviewed publication medium in solid state physics. For more information see www.pss‐rapid.com and the Editorial by the Editor‐in‐Chief Martin Stutzmann on page 7 [3].