Physics – Condensed Matter – Superconductivity
Scientific paper
2006-09-12
in Proceedings of 14th International Symposium "NANOSTRUCTURES: Physics and Technology" St Petersburg: Ioffe Institute, p. 240
Physics
Condensed Matter
Superconductivity
3 pages, 3 figures
Scientific paper
Mesoscopic loop is proposed in many works as possible solid-state quantum bit, i.e. two-state quantum system. The quantum oscillations of resistance and of rectified voltage observed on asymmetric superconducting loops give evidence of the two states at magnetic flux divisible by half of the flux quantum. But our measurements of quantum oscillations of the critical current of these loops have given results coming into irreconcilable contradictions with result of the observations of the quantum oscillations of resistance.
Burlakov A. A.
Dubonos S. V.
Gurtovoi V. L.
Nikulov A. V.
Tulin V. A.
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