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Local Current Injection into Mesoscopic Superconductors for the Manipulation of Quantum States

M. V. Milošević, A. Kanda, S. Hatsumi, F. M. Peeters, Y. Ootuka

DOI 10.1103/PhysRevLett.103.217003 · Physical Review Letters

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Abstract

We perform strategic current injection in a small mesoscopic superconductor and control the (non)equilibrium quantum states in an applied homogeneous magnetic field. In doing so, we realize a current-driven splitting of multiquanta vortices, current-induced transitions between states with different angular momenta, and current-controlled switching between otherwise degenerate quantum states. These fundamental phenomena form the basis for the electronic and logic applications discussed, and are confirmed in both theoretical simulations and multiple-small-tunnel-junction transport measurements.

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FormulaReported Tc (K)Pressure (GPa)Type
Al

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1.35Pressure not reportedunknown

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