Practically universal representation of the Helfand-Werthamer upper critical field for any transport scattering rate

Journal Article · 02 December 2024 · Physical Review Applied

DOI: https://doi.org/10.1103/physrevapplied.22.064006 · OSTI ID:2481295

Prozorov, Ruslan  ^[1]; Kogan, Vladimir G.  ^[2]

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1. Ames Lab., and Iowa State Univ., Ames, IA (United States)
2. Ames Laboratory (AMES), Ames, IA (United States)

Here, the simplified scaling of the orbital upper critical field, H_c2⁡(T), for an isotropic s-wave superconductor is introduced. To facilitate the analysis of the experimental data, we suggest a simple but accurate approximation of the Helfand-Werthamer upper critical field in the entire temperature range valid for any transport scattering rate: H_c⁢2⁡/⁢H_c⁢⁢2⁡(0) ≈ (1 -t²)/(1 + 0.42t^1.47).

• Research Organization: Ames Laboratory (AMES), Ames, IA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
• Grant/Contract Number: AC02-07CH11358
• OSTI ID: 2481295
• Report Number(s): AL-J--678
• Journal Information: Physical Review Applied, Journal Name: Physical Review Applied Journal Issue: 6 Vol. 22; ISSN 2331-7019
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English