hyperfine.superconductivity.pippard.lambda_diffusive

hyperfine.superconductivity.pippard.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)], l: Annotated[float, slice(0, None, None)], lambda_L: Annotated[float, slice(0, None, None)], xi_0: Annotated[float, slice(0, None, None)], alpha: Annotated[float, slice(0, None, None)] = 1.0) → float

Evaluate the magnetic penetration depth within Pippard theory.

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

Parameters:

• T – Annotated[float, 0:None],

• T_c – Annotated[float, 0:None],

• Delta_0 – Annotated[float, 0:None],

• l – electron mean-free-path (nm).

• lambda_L – London penetration depth (nm).

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

• alpha – numerical constant on the order of unity.

Returns:

The magnetic penetration depth (nm) at 0 K.