Mesoscopic cross-film cryotrons: Vortex trapping and dc-Josephson-like oscillations of the critical current

Details Mesoscopic cross-film cryotrons: Vortex trapping and dc-Josephson-like oscillations of the critical current Mesoscopic cross-film cryotrons: Vortex trapping and dc-Josephson-like oscillations of the critical current

2011-02-22

arxiv.org/abs/1102.4545v1

Phys. Rev. B 83, 144509 (2011)

Physics

Condensed Matter

Superconductivity

8 pages, 8 figures

Scientific paper

10.1103/PhysRevB.83.144509

We investigate theoretically and experimentally the transport properties of a plain Al superconducting strip in the presence of a single straight current-carrying wire, oriented perpendicular to the superconducting strip. It is well known that the critical current of the superconducting strip, Ic, in such cryotron--like system can be tuned by changing the current in the control wire, Iw. We demonstrated that the discrete change in the number of the pinned vortices/antivortices inside the narrow and long strip nearby the current-carrying wire results in a peculiar oscillatory dependence of Ic on Iw.

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