Anomalously strong near-neighbor attraction in doped 1D cuprate chains
Zhuoyu Chen, Yao Wang, Slavko N. Rebec, Tao Jia, Makoto Hashimoto, Donghui Lu, Brian Moritz, Robert G. Moore, Thomas P. Devereaux, Zhi-Xun Shen
Abstract
over a wide range of hole doping. Our angle-resolved photoemission experiments reveal the doping evolution of the holon and spinon branches. We identify a prominent folding branch whose intensity fails to match predictions of the simple Hubbard model. An additional strong near-neighbor attraction, which may arise from coupling to phonons, quantitatively explains experiments for all accessible doping levels. Considering structural and quantum chemistry similarities among cuprates, this attraction may play a similarly important role in high-temperature cuprate superconductors.
Topics & Concepts
CuprateSpinonDopingCondensed matter physicsChemical physicsFolding (DSP implementation)Coupling (piping)Materials sciencePhysicsRange (aeronautics)QuantumAttractionSimple (philosophy)SuperconductivityChemistryHubbard modelAngle-resolved photoemission spectroscopyNanotechnologyPhysics of Superconductivity and MagnetismElectronic and Structural Properties of OxidesSurface and Thin Film Phenomena