Charge 4$e$ superconductor: a wavefunction approach

Pengfei Li; Kun Jiang; Jiangping Hu

doi:10.1016/j.scib.2024.06.002

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arXiv · 2209.13905

Charge 4$e$ superconductor: a wavefunction approach

Pengfei Li·Kun Jiang·Jiangping Hu

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Abstract

We apply a wavefunction approach to study the charge 4$e$ superconductor. The wavefunction takes a similar structure to the BCS wavefunction for charge 2$e$ superconductors. The mean-field Hamiltonian and the Green's functions of charge 4$e$ are constructed. The physical properties including the density of states, gauge invariance, flux quantization, superfluid density and Josephson effects are systematically studied. All these results form a microscopic description of the charge 4$e$ SC and can be served as the hallmarks for experimental verifications.

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Pengfei Li, Kun Jiang, Jiangping Hu. 2022-09-28. Charge 4$e$ superconductor: a wavefunction approach. https://doi.org/10.1016/j.scib.2024.06.002

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