Reference : Controlling flux flow dissipation by changing flux pinning in superconducting films
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Controlling flux flow dissipation by changing flux pinning in superconducting films
Grimaldi, G [Universita degli Studi di Salerno > Fisica > > >]
Leo, A [Universita degli Studi di Salerno > Fisica > > >]
Nigro, A [Universita degli Studi di Salerno > Fisica > > >]
Silhanek, Alejandro mailto [Université de Liège - ULiège > Département de physique > Physique de la matière condensée >]
Verellen, N [Katholieke Universiteit Leuven - KUL > Physics > > >]
Moshchalkov, V.V. [Katholieke Universiteit Leuven - KUL > Physics > > >]
Milosevic, M.V. [Universiteit Antwerpen - UA > Physics > > >]
Casaburi, A. [Istituto di Cibernetica “E. Caianiello" > > > >]
Cristiano, R. [Istituto di Cibernetica “E. Caianiello" > > > >]
Pace, S. [Universita degli Studi di Salerno > Fisica > > >]
Applied Physics Letters
American Institute of Physics
Yes (verified by ORBi)
[en] superconductivity ; flux-flow ; Larkin-Ovchinnikov instabilities
[en] We study the flux flow state in superconducting materials characterized by rather strong intrinsic pinning, such as Nb, NbN, and nanostructured Al thin films, in which we drag the superconducting dissipative state into the normal state by current biasing. We modify the vortex pinning strength either by ion irradiation, by tuning the measuring temperature or by including artificial pinning centers. We measure critical flux flow voltages for all materials and the same effect is observed: switching to low flux flow dissipations at low fields for an intermediate pinning regime. This mechanism offers a way to additionally promote the stability of the superconducting state.
Researchers ; Professionals

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