hyperfine.superconductivity.bcs

Expressions from Bardeen-Cooper-Schrieffer (BCS) theory for nonlocal field screening.

J. Bardeen, L. N. Cooper, and J. R. Schrieffer, Theory of Superconductivity, Phys. Rev. 108, 1175 (1957). https://doi.org/10.1103/PhysRev.108.1175

J. Halbritter, On the penetration of the magnetic field into a superconductor, Z. Physik 243, 201–219 (1971). https://doi.org/10.1007/BF01394851

Functions

K_BCS(q, T, T_c, Delta_0, xi_0, ell, lambda_L)	The BCS response function.
integrand_diffusive(q, T, T_c, Delta_0, ...)	The BCS integrand for diffusive scattering.
lambda_diffusive(T, T_c, Delta_0, xi_0, ell, ...)	Evaluate the magnetic penetration depth within BCS theory.