Microscopic picture of the critical state in a superconductor with a periodic array of antidots | Zendy

A. V. Silhanek | Zendy; J. Gutiérrez | Zendy; R. B. G. Kramer | Zendy; G. W. Ataklti | Zendy; Joris Van de Vondel | Zendy; V. V. Moshchalkov | Zendy; Alvaro Sanchez | Zendy

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Microscopic picture of the critical state in a superconductor with a periodic array of antidots

Author(s) -

A. V. Silhanek,

J. Gutiérrez,

R. B. G. Kramer,

G. W. Ataklti,

Joris Van de Vondel,

V. V. Moshchalkov,

Alvaro Sanchez

Publication year - 2011

Publication title -

physical review b

Language(s) - English

Resource type - Journals

eISSN - 1538-4489

pISSN - 1098-0121

DOI - 10.1103/physrevb.83.024509

Subject(s) - condensed matter physics , superconductivity , vortex , physics , nanoscopic scale , penetration depth , flux pinning , critical field , microscopy , vortex state , critical current , materials science , optics , quantum mechanics , mechanics

By using scanning Hall microscopy we visualize the progressive formation of the critical state with individual vortex resolution in a Pb thin film with a periodic pinning array. Slightly above the first penetration field, we directly observe a terraced critical state as proposed theoretically by Cooley and Grishin [Phys. Rev. Lett. 74, 2788 (1995)]. However, at higher fields, the flux front tends to disorder and the classical Bean profile is restored. This study allows us to establish a clear link between the widely used integrated response measurements in the superconducting state and the nanoscale landscape defined by individual vortices.status: publishe

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