2006/09/28 by R. Geurts, Roeland Geurts, M. V. Miloševıć +2 · 1 citation
Mathematics · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Field (mathematics) #Geometry #Homogeneous #Magnetic field #Mathematics #Nucleation #Order (exchange) #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Quantum, superfluid, helium dynamics #Statistical physics #Superconductivity #Symmetry (geometry) #Thermodynamics #Type-II superconductor #Vortex #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.97.137002
published as Phys. Rev. Lett. 97, 137002 (2006) · 5 pages, 5 figures
openalex publication_date 2006/09/28 · arxiv created 2008/10/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In submicron superconducting squares in a homogeneous magnetic field, Ginzburg-Landau theory may admit solutions of the vortex-antivortex type, conforming to the symmetry of the sample [L. F. Chibotaru, Nature (London) 408, 833 (2000)10.1038/35048521]. Here we show that these fascinating, but never experimentally observed states, can be enforced by artificial fourfold pinning, with their diagnostic features enhanced by orders of magnitude. The second-order nucleation of vortex-antivortex molecules can be driven by either temperature or an applied magnetic field, with stable asymmetric vortex-antivortex equilibria found on its path.