Normal Metal–Insulator–Superconductor Aharonov-Bohm Interferometer.
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| Title: | Normal Metal–Insulator–Superconductor Aharonov-Bohm Interferometer. |
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| Authors: | Arutyunov, K. Yu.1,2 (AUTHOR) karutyunov@hse.ru, Gurskiy, A. S.1 (AUTHOR), Pozdnyakova, E. Ph.1 (AUTHOR), Shapovalov, D. L.2 (AUTHOR), Deng, Guang-Wei3 (AUTHOR), Chekushkin, A. M.4 (AUTHOR), Markina, M. A.4 (AUTHOR), Tarasov, M. A.4 (AUTHOR) |
| Source: | Journal of Superconductivity & Novel Magnetism. Dec2024, Vol. 37 Issue 11/12, p1913-1916. 4p. |
| Subjects: | Aharonov-Bohm effect, Optical interferometers, Copper, Wave functions, Aluminum oxide |
| Abstract: | When a non-equilibrium excitation (a non-paired electron) is injected into a superconductor, it can travel fairly large distance before forming an equilibrium Copper pair. Here, we fabricated and experimentally studied electron transport in a solid-state analogue of a two-slit optical interferometer: T-shaped normal metal electrode (copper) — dielectric tunnel layer (aluminum oxide) — superconducting fork (aluminum). If the perimeter of the interferometer loop is sufficiently small, the phase of the non-equilibrium quasiparticle wave function is preserved and can be adjusted utilizing the Aharonov-Bohm effect. The coherent contribution manifests itself as non-monotonic dependence of the tunnel current on perpendicular magnetic field. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | When a non-equilibrium excitation (a non-paired electron) is injected into a superconductor, it can travel fairly large distance before forming an equilibrium Copper pair. Here, we fabricated and experimentally studied electron transport in a solid-state analogue of a two-slit optical interferometer: T-shaped normal metal electrode (copper) — dielectric tunnel layer (aluminum oxide) — superconducting fork (aluminum). If the perimeter of the interferometer loop is sufficiently small, the phase of the non-equilibrium quasiparticle wave function is preserved and can be adjusted utilizing the Aharonov-Bohm effect. The coherent contribution manifests itself as non-monotonic dependence of the tunnel current on perpendicular magnetic field. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 15571939 |
| DOI: | 10.1007/s10948-024-06762-1 |
