Reference : Influence of artificial pinning on vortex lattice instability in superconducting films
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/119442
Influence of artificial pinning on vortex lattice instability in superconducting films
English
Silhanek, Alejandro mailto [Université de Liège - ULg > Département de physique > Physique de la matière condensée >]
Leo, A. [Universita degli Studi di Salerno > Fisica > > >]
Grimaldi, G. [Universita degli Studi di Salerno > Fisica > > >]
Berdiyorov, G.R. [Universiteit Antwerpen - UA > Fysica > > >]
Milosevic, M.V. [Universiteit Antwerpen - UA > Fysica > > >]
Nigro, A. [Universita degli Studi di Salerno > Fisica > > >]
Pace, S. [Universita degli Studi di Salerno > Fisica > > >]
Verellen, N. [Katholieke Universiteit Leuven - KUL > Physics and Astronomy > > >]
Gillijns, W. [Katholieke Universiteit Leuven - KUL > Physics and Astronomy > > >]
Metlushko, V. [University of Illinois > Department of Electrical and Computer Engineering > > >]
Ilic, B. [Cornell University > School of Applied and Engineering Physics > > >]
Zhu, Xiaobin [Seagate Technology Inc > > > >]
Moshchalkov, V.V. [Katholieke Universiteit Leuven - KUL > Physics and Astronomy > > >]
4-May-2012
New Journal of Physics
Institute of Physics
14
053006
Yes (verified by ORBi)
International
1367-2630
Bristol
United Kingdom
[en] Larkin-Ovchinnikov instabilities
[en] In superconducting films under an applied dc current, we analyze
experimentally and theoretically the influence of engineered pinning on the
vortex velocity at which the flux-flow dissipation undergoes an abrupt transition
from low to high resistance. We argue, based on a nonuniform distribution
of vortex velocity in the sample, that in strongly disordered systems the
mean critical vortex velocity for flux-flow instability (i) has a nonmonotonic
dependence on magnetic field and (ii) decreases as the pinning strength is
increased. These findings challenge the generally accepted microscopic model of
Larkin and Ovchinnikov (1979 J. Low. Temp. Phys. 34 409) and all subsequent
refinements of this model which ignore the presence of pinning centers.
Researchers ; Professionals
http://hdl.handle.net/2268/119442
10.1088/1367-2630/14/5/053006

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