hyperfine.superconductivity.bcs.lambda_diffusive

hyperfine.superconductivity.bcs.lambda_diffusive(T: Annotated[float, slice(0, None, None)], T_c: Annotated[float, slice(0, None, None)], Delta_0: Annotated[float, slice(0, None, None)], xi_0: Annotated[float, slice(0, None, None)], ell: Annotated[float, slice(0, None, None)], lambda_L: Annotated[float, slice(0, None, None)]) → float

Evaluate the magnetic penetration depth within BCS theory.

The calculation assumes diffuse scattering of electrons at the material’s surface.

Parameters:

• T – Absolute temperature.

• T_c – Absolute superconducting transition temperature.

• Delta_0 – Superconducting energy gap (eV) at 0 K.

• xi_0 – BCS coherence length (nm) at 0 K.

• ell – Electron mean-free-path (nm).

• lambda_L – London penetration depth (nm).

Returns:

The magnetic penetration depth (nm) at 0 K.