Magnetic-Field-Dependent Pair-Breaking Model for Terahertz Conductivity of Superconductors
A description of the terahertz optical conductivity of conventional superconductors in a magnetic field that augments pair-conserving disorder scattering with a field-dependent pair-breaking rate, formulated analytically via a Green's function so the density of states and in-gap states are directly accessible. It handles both field-parallel (Voigt) thin-film response and field-perpendicular (Faraday) response, where vortices are modeled as normal inclusions in a superconducting matrix through effective-medium theory.
2501.00325
This paper models the terahertz (THz) optical conductivity of conventional (BCS) superconducting thin films in an applied magnetic field, in both the Voigt geometry (field parallel to the film) and t…