Fabrication of Artificial Washboard Pinning Structures in Thin Niobium Films

  • Oleksandr V. Dobrovolskiy
  • Michael Huth
  • Valerij A. Shklovskij
Original Paper

Abstract

We demonstrate a possibility to realize various types of the anisotropic washboard periodic pinning potentials in thin niobium films sputtered onto α-alumina (11\(\bar{2}\)0) substrates. Arrays of highly periodic channels as well as ferromagnetic cobalt lines were fabricated using focused ion-beam etching and gas-assisted focused electron beam deposition techniques, respectively. Three different nanostructure profiles which could provoke guided vortex motion were fabricated. By this way either uniaxial or bianisotropic, or asymmetric (ratchet) pinning structures have been realized. The results of scanning electron and atomic force microscopy investigations of the fabricated nanopatterns are discussed.

Keywords

Nanostructured thin films Guiding Focused particle beam etching and deposition Anisotropic washboard pinning potential 

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Oleksandr V. Dobrovolskiy
    • 1
    • 2
  • Michael Huth
    • 1
  • Valerij A. Shklovskij
    • 2
    • 3
  1. 1.Physikalisches InstitutGoethe-UniversitätFrankfurt am MainGermany
  2. 2.Physical DepartmentKharkov National UniversityKharkovUkraine
  3. 3.Institute for Theoretical PhysicsNational Scientific Center—Kharkov Institute of Physics and TechnologyKharkovUkraine

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