Controlling the Motion of Magnetic Flux Quanta

B. Y. Zhu, F. Marchesoni, and Franco Nori
Phys. Rev. Lett. 92, 180602 – Published 6 May 2004

Abstract

We study the transport of vortices in superconductors with triangular arrays of boomerang- or V-shaped asymmetric pinning wells, when applying an alternating electrical current. The asymmetry of the pinning landscape induces a very efficient “diode” effect, that allows the sculpting at will of the magnetic field profile inside the sample. We present the first quantitative study of magnetic “lensing” of fluxons inside superconductors. Our proposed vortex lens provides a near threefold increase of the vortex density at its “focus” regions. The main numerical features have been derived analytically.

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  • Received 3 May 2003

DOI:https://doi.org/10.1103/PhysRevLett.92.180602

©2004 American Physical Society

Authors & Affiliations

B. Y. Zhu1, F. Marchesoni1,2,*, and Franco Nori1,3,*

  • 1Frontier Research System, The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama 351-0198, Japan
  • 2Istituto Nazionale di Fisica della Materia, Universitá di Camerino, I-62032 Camerino, Italy
  • 3Center for Theoretical Physics, Physics Department, University of Michigan, Ann Arbor, Michigan 48109, USA

  • *Permanent address. Corresponding author. Electronic address: nori@umich.edu

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Vol. 92, Iss. 18 — 7 May 2004

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