Publication Date:
2018-02-24
Description:
Author(s): Sebastian Huber, Johannes Feldmeier, and Matthias Punk Many properties of the copper oxide high-temperature superconductors are still poorly understood, despite more than thirty years of research. This is true in particular for the metallic “pseudogap” state, out of which the well-known superconducting phase develops upon increasing the concentration of hole-like charge carriers. Here, the authors analyze the single-electron spectral function of a recently introduced quantum dimer model, which features a very interesting metallic ground state with topological order: a so-called fractionalized Fermi liquid. Earlier works have argued that this model describes several key properties of the pseudogap metal, such as Fermi-arc like features in photoemission experiments. Using a combination of numerical and analytical methods, the authors show that this model indeed features a sizable antinodal pseudogap with an angular dependence deviating from a simple d -wave form, in accordance with various experimental results on underdoped cuprates. [Phys. Rev. B 97, 075144] Published Fri Feb 23, 2018
Keywords:
Electronic structure and strongly correlated systems
Print ISSN:
1098-0121
Electronic ISSN:
1095-3795
Topics:
Physics
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