Possible Lattice-Like Medium for Electron Pairing in La2CuO4

Tiege Zhou

Working Paper Article Version 1 This version is not peer-reviewed

Version 1 : Received: 9 July 2019 / Approved: 10 July 2019 / Online: 10 July 2019 (10:29:23 CEST)

Real-time evolution of the electron densities under excitations in La₂CuO₄ was calculated by the time-dependent density functional theory (TDDFT). The author found, for the first time, under excitations, the electron cloud of Cu²⁺ changes obviously and the characteristic frequencies are 83 meV and 36 meV, respectively, for two different modes. The results are unexpected and close to that of lattice vibrations. The results show that the electron cloud of Cu²⁺ (just like the lattice) can be the electron-pairing medium in high temperature copper oxide superconductors.

high temperature copper-oxide superconductors; time-dependent density functional theory; electron-pairing medium

Physical Sciences, Condensed Matter Physics

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Possible Lattice-Like Medium for Electron Pairing in La₂CuO₄

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