Quantum tunneling theory of Cooper pairs as bosonic particles

Abstract We propose a simple phenomenological theory for quantum tunneling of Cooper pairs, in superconductor/insulator/superconductor tunnel junctions, for a regime where the system can be modeled as bosonic particles. Indeed, provided there is an absence of quasiparticle excitations (fermions), ou...

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Autores principales:	Edgar J. Patiño, Daniel Lozano-Gómez
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f3767fd0c62c40ad8a3b282757b674e4
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spelling	oai:doaj.org-article:f3767fd0c62c40ad8a3b282757b674e42021-12-02T17:16:17ZQuantum tunneling theory of Cooper pairs as bosonic particles10.1038/s41598-021-88228-12045-2322https://doaj.org/article/f3767fd0c62c40ad8a3b282757b674e42021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88228-1https://doaj.org/toc/2045-2322Abstract We propose a simple phenomenological theory for quantum tunneling of Cooper pairs, in superconductor/insulator/superconductor tunnel junctions, for a regime where the system can be modeled as bosonic particles. Indeed, provided there is an absence of quasiparticle excitations (fermions), our model reveals a rapid increase in tunneling current, around zero bias voltage, which rapidly saturates. This manifests as a zero bias conductance peak that strongly depends on the superconductors temperature in a non-monotonic way. This low energy tunneling of Cooper pairs could serve as an alternative explanation for a number of tunneling experiments where zero bias conductance peak has been observed.Edgar J. PatiñoDaniel Lozano-GómezNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Edgar J. Patiño Daniel Lozano-Gómez Quantum tunneling theory of Cooper pairs as bosonic particles
description	Abstract We propose a simple phenomenological theory for quantum tunneling of Cooper pairs, in superconductor/insulator/superconductor tunnel junctions, for a regime where the system can be modeled as bosonic particles. Indeed, provided there is an absence of quasiparticle excitations (fermions), our model reveals a rapid increase in tunneling current, around zero bias voltage, which rapidly saturates. This manifests as a zero bias conductance peak that strongly depends on the superconductors temperature in a non-monotonic way. This low energy tunneling of Cooper pairs could serve as an alternative explanation for a number of tunneling experiments where zero bias conductance peak has been observed.
format	article
author	Edgar J. Patiño Daniel Lozano-Gómez
author_facet	Edgar J. Patiño Daniel Lozano-Gómez
author_sort	Edgar J. Patiño
title	Quantum tunneling theory of Cooper pairs as bosonic particles
title_short	Quantum tunneling theory of Cooper pairs as bosonic particles
title_full	Quantum tunneling theory of Cooper pairs as bosonic particles
title_fullStr	Quantum tunneling theory of Cooper pairs as bosonic particles
title_full_unstemmed	Quantum tunneling theory of Cooper pairs as bosonic particles
title_sort	quantum tunneling theory of cooper pairs as bosonic particles
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f3767fd0c62c40ad8a3b282757b674e4
work_keys_str_mv	AT edgarjpatino quantumtunnelingtheoryofcooperpairsasbosonicparticles AT daniellozanogomez quantumtunnelingtheoryofcooperpairsasbosonicparticles
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Quantum tunneling theory of Cooper pairs as bosonic particles

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