hyperfine.superconductivity.ccf.screening_profile_ss

hyperfine.superconductivity.ccf.screening_profile_ss(x: Sequence[float], B_0: Annotated[float, slice(0, None, None)], d_S: Annotated[float, slice(0, None, None)], lambda_1: Annotated[float, slice(0, None, None)], lambda_2: Annotated[float, slice(0, None, None)]) → Sequence[float][source]

Meissner screening for a superconductor-superconductor (SS) bilayer.

The expression was derived from a London model of the SS layers.

See Eqs. (21) and (22) in: T. Kubo, Multilayer coating for higher accelerating fields in superconducting radio-frequency cavities: a review of theoretical aspects, Supercond. Sci. Technol. 30 023001 (2017). https://doi.org/10.1088/1361-6668/30/2/023001

Parameters:

  • x – Depth below the suface (nm).

  • B_0 – Applied magnetic field (G).

  • d_S – Superconducting film thickness (nm).

  • lambda_1 – Magnetic penetration depth of the superconducting film (nm).

  • lambda_2 – Magnetic penetration depth of the superconducting substrate (nm).

Returns:

The Meissner screening profile at position x (G).