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Andreev Oscillations in Normal-Superconducting-Normal Nanostructures

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Abstract

We show that the voltage drop of specially prepared normal-superconducting-normal nanostructures show Andreev oscillations as a function of magnetic field or input current. These oscillations are due to the interference of the electron wave function between the normal parts of the structure that act as reflective interfaces, i.e. our devices behave as a Fabry–Perot interferometer for conduction electrons. The observed oscillations and field periods are well explained by theory.

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Author notes

  1. P. Rödiger

    Present address: Institut für Festkörperelektronik, Technische Universität Wien, E362 Floragasse 7/1, 1040, Vienna, Austria

Authors and Affiliations

  1. Division of Superconductivity and Magnetism, Institut für Experimentelle Physik II, Universität Leipzig, Linnéstraße 5, 04103, Leipzig, Germany

    P. Rödiger, P. Esquinazi & N. García

  2. Laboratorio de Física de Sistemas Pequeños y Nanotecnología, Consejo Superior de Investigaciones Científicas, 28006, Madrid, Spain

    N. García

Authors
  1. P. Rödiger
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  2. P. Esquinazi
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  3. N. García
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Correspondence to P. Esquinazi.

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Rödiger, P., Esquinazi, P. & García, N. Andreev Oscillations in Normal-Superconducting-Normal Nanostructures. J Supercond Nov Magn 22, 331–335 (2009). https://doi.org/10.1007/s10948-008-0439-4

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  • DOI: https://doi.org/10.1007/s10948-008-0439-4

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