Pearl vortices in anisotropic superconducting films

Journal Article · Thu Oct 28 00:00:00 EDT 2021 · Physical Review B

DOI:https://doi.org/10.1103/physrevb.104.144512· OSTI ID:1833048

Kogan, V. G. ^[1]; Nakagawa, N. ^[2]; Kirtley, J. R. ^[3]

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1. Ames Lab., Ames, IA (United States)
2. Iowa State Univ., Ames, IA (United States)
3. Kirtleyscientific, Pacific Grove, CA (United States)

The magnetic field of vortices in anisotropic superconducting films is considered in the framework of anisotropic London approach. It is found that at distances large relative to the core size, the magnetic field normal to the film surface may change sign. Here, we find that the magnetic field attenuates at large distances as 1/r³ as it does in isotropic films, but the anisotropy induces an angular dependence to the supercurrents which causes the sign of the field to change for anisotropy parameters γ = λ₂/λ₁ > $$\sqrt{2}$$ in some parts of the (x, y) plane.

• Research Organization: Ames Laboratory (AMES), Ames, IA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
• Grant/Contract Number: AC02-07CH11358
• OSTI ID: 1833048
• Report Number(s): IS-J--10,649
• Journal Information: Physical Review B, Journal Name: Physical Review B Journal Issue: 14 Vol. 104; ISSN 2469-9950
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY