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.

3 pages, 1 figures in the main text

References in corpus (4)

• Charge $4e$ superconductivity from pair density wave order in certain high temperature superconductors
• Kagome superconductors AV${}_3$Sb${}_5$ (A=K, Rb, Cs)
• Competing orders in one dimensional spin 3/2 fermionic systems
• Theory of the striped superconductor

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