Dresden 2017 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 55: Poster Session: Superconductivity 2
TT 55.1: Poster
Mittwoch, 22. März 2017, 15:00–19:00, P2-OG3
Reduction of dissipation in rolled-up superconductor microstructures — E. A. Posenitskiy1, R. O. Rezaev1,2, and •V. M. Fomin3 — 1Tomsk Polytechnic University, Tomsk, 634050, Russia — 2Moscow Engineering Physics Institute, Moscow, 115409, Russia — 3IFW Dresden, Insitute for Integrative Nanosciences, D-01069 Dresden
Vortex dynamics in rolled-up superconductor microtubes [1] are influenced by the interplay between the scalar potential and the inhomogeneous magnetic field component normal to the surface in the presence of a transport current. A numerical solution of the time-dependent Ginzburg-Landau equation coupled with the Poisson equation for the scalar potential allowed us to analyze the potential induced by moving vortices as a function of the transport current. For rolled-up Nb superconductor tubes with radii from 350 nm to 550 nm, the energy dissipation decreases twice as compared to the unrolled planar structures of same dimensions.
The work was supported by the bilateral BMBF-Russia Grant 01DJ13009 and by the COST Action MP1201 “Nanoscale Superconductivity”. E. A. P. was supported by the Science Office of the Institute of Physics and Technology at TPU.
[1] V. M. Fomin, R. O. Rezaev, O. G. Schmidt, Nano Lett. 12, 1282 (2012)