Work

On the applicability ranges of Tc formulas for proximity-coupled thin SN and SS bilayers

Year: 2025

Type: article

Abstract: This Brief Note revisits the well-established T c formulas for proximity-coupled thin superconductor-normal conductor (SN) and superconductor-superconductor (SS) bilayers. While several formulas exist, their interrelations and ranges of validity are not well documented, which can often lead to misapplication and potential misinterpretation of experimental data. To address this issue, the note clarifies these relationships and applicability ranges, offering guidance for their proper use in experimental and applied settings. McMillan's formula is recommended for SN bilayers due to its broad applicability, with its SS counterpart providing similar reliability.

Source: Japanese Journal of Applied Physics

DOI: 10.35848/1347-4065/ada74d

Author: Takayuki Kubo

Institutions: High Energy Accelerator Research Organization, KEK Accelerator Laboratory

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,210

Funders: Toray Science Foundation, Japan Society for the Promotion of Science