Charge 4$e$ superconductor: a wavefunction approach

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.

arXiv comment3 pages, 1 figures in the main text

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Cited by in corpus (3)

• Nematic Superconductivity and Its Critical Vestigial Phases in the Quasi-crystal
• Thermomodulated intrinsic Josephson effect in Kagome CsV3Sb5
• Paramagnetic contribution in superconductors with different-mass Cooper pairs