2015/10/31 by Shiping Feng, Deheng Gao, Huaisong Zhao · 1 citation
Engineering · Mathematics · Physics and Astronomy · #Advanced Condensed Matter Physics #Arc (geometry) #Charge (physics) #Charge ordering #Condensed matter physics #Connection (principal bundle) #Cuprate #Instability #Mathematics #Order (exchange) #Physics #Physics of Superconductivity and Magnetism #Pseudogap #Quantum mechanics #Superconducting Materials and Applications #Superconductivity #cond-mat.supr-con
paper · pdf · doi:10.1080/14786435.2016.1161858
published as Phil. Mag. 96, 1245 (2016) · 10 pages, 8 figures, added comments and reference, accepted for publication in Philosophical Magazine. arXiv admin note: text overlap with arXiv:1502.02903
arxiv created 2016/03/07 · openalex publication_date 2016/03/28 · arxiv updated 2016/04/26 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
The recently discovered charge order is a generic feature of cuprate superconductors, however, its microscopic origin remains debated. Within the framework of the fermion-spin theory, the nature of charge order in the pseudogap phase and its evolution with doping are studied by taking into account the electron self-energy (then the pseudogap) effect. It is shown that the antinodal region of the electron Fermi surface is suppressed by the electron self-energy, and then the low-energy electron excitations occupy the disconnected Fermi arcs located around the nodal region. In particular, the charge order state is driven by the Fermi-arc instability, with a characteristic wave vector corresponding to the hot spots of the Fermi arcs rather than the antinodal nesting vector. Moreover, although the Fermi arc increases its length as a function of doping, the charge order wave vector reduces almost linearity with the increase of doping. The theory also indicates that the Fermi arc, charge order and pseudogap in cuprate superconductors are intimately related to each other, and all of them emanates from the electron self-energy due to the interaction between electrons by the exchange of spin excitations.