Macroscopic quantum tunneling and retrapping processes in moderately damped YBaCuO Josephson junctions
The moderately damped regime in a Josephson junction (JJ) is quite common in devices characterized by low critical currents and therefore by low Josephson energies. Measurements of switching current distribution (SCD) are a direct way of discriminating the phase dynamics also in the nontrivial cas...
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
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| Zitieren: | Macroscopic quantum tunneling and retrapping processes in moderately damped YBaCuO Josephson junctions / D. Massarotti, L. Longobardi, L. Galletti, D. Stornaiuolo, G. Rotoli, F. Tafuri // Физика низких температур. — 2013. — Т. 39, № 3. — С. 378–383. — Бібліогр.: 37 назв. — англ. |
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oai:nasplib.isofts.kiev.ua:123456789-1182482025-02-23T17:01:41Z Macroscopic quantum tunneling and retrapping processes in moderately damped YBaCuO Josephson junctions Massarotti, D. Longobardi, L. Galletti, L. Stornaiuolo, D. Rotoli, G. Tafuri, F. К 75-летию со дня рождения И. К. Янсона The moderately damped regime in a Josephson junction (JJ) is quite common in devices characterized by low critical currents and therefore by low Josephson energies. Measurements of switching current distribution (SCD) are a direct way of discriminating the phase dynamics also in the nontrivial case of moderate damping, which is going to be more and more common with advances in nanopatterning superconductors and in materials science finalized to build hybrid systems. We report on measurements of SCDs, both in thermal and quantum regime, on moderately damped YBaCuO grain boundary biepitaxial JJs. A direct transition from phase diffusion regime to macroscopic quantum tunnelling occurs at about 130 mK. The crossover to the quantum regime is tuned by the magnetic field and phase dynamics is described by a fully consistent set of junction parameters derived through numerical simulations. This work is supported by MIUR PRIN 2009 under the project “SuFET based on nanowires and HTS”. We also acknowledge partial support by a Marie Curie International Reintegration Grant No. 248933 hybMQC within the 7th European Community Framework Programme and by “FIRB-Futuro in Ricerca 2012” — Project HybridNanoDev (Grant No. RBFR1236VV). 2013 Article Macroscopic quantum tunneling and retrapping processes in moderately damped YBaCuO Josephson junctions / D. Massarotti, L. Longobardi, L. Galletti, D. Stornaiuolo, G. Rotoli, F. Tafuri // Физика низких температур. — 2013. — Т. 39, № 3. — С. 378–383. — Бібліогр.: 37 назв. — англ. 0132-6414 PACS: 74.72.–h, 85.25.Cp, 74.50.+r https://nasplib.isofts.kiev.ua/handle/123456789/118248 en Физика низких температур application/pdf Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
К 75-летию со дня рождения И. К. Янсона К 75-летию со дня рождения И. К. Янсона |
| spellingShingle |
К 75-летию со дня рождения И. К. Янсона К 75-летию со дня рождения И. К. Янсона Massarotti, D. Longobardi, L. Galletti, L. Stornaiuolo, D. Rotoli, G. Tafuri, F. Macroscopic quantum tunneling and retrapping processes in moderately damped YBaCuO Josephson junctions Физика низких температур |
| description |
The moderately damped regime in a Josephson junction (JJ) is quite common in devices characterized by low
critical currents and therefore by low Josephson energies. Measurements of switching current distribution (SCD)
are a direct way of discriminating the phase dynamics also in the nontrivial case of moderate damping, which is
going to be more and more common with advances in nanopatterning superconductors and in materials science
finalized to build hybrid systems. We report on measurements of SCDs, both in thermal and quantum regime, on
moderately damped YBaCuO grain boundary biepitaxial JJs. A direct transition from phase diffusion regime to
macroscopic quantum tunnelling occurs at about 130 mK. The crossover to the quantum regime is tuned by the
magnetic field and phase dynamics is described by a fully consistent set of junction parameters derived through
numerical simulations. |
| format |
Article |
| author |
Massarotti, D. Longobardi, L. Galletti, L. Stornaiuolo, D. Rotoli, G. Tafuri, F. |
| author_facet |
Massarotti, D. Longobardi, L. Galletti, L. Stornaiuolo, D. Rotoli, G. Tafuri, F. |
| author_sort |
Massarotti, D. |
| title |
Macroscopic quantum tunneling and retrapping processes in moderately damped YBaCuO Josephson junctions |
| title_short |
Macroscopic quantum tunneling and retrapping processes in moderately damped YBaCuO Josephson junctions |
| title_full |
Macroscopic quantum tunneling and retrapping processes in moderately damped YBaCuO Josephson junctions |
| title_fullStr |
Macroscopic quantum tunneling and retrapping processes in moderately damped YBaCuO Josephson junctions |
| title_full_unstemmed |
Macroscopic quantum tunneling and retrapping processes in moderately damped YBaCuO Josephson junctions |
| title_sort |
macroscopic quantum tunneling and retrapping processes in moderately damped ybacuo josephson junctions |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2013 |
| topic_facet |
К 75-летию со дня рождения И. К. Янсона |
| citation_txt |
Macroscopic quantum tunneling and retrapping
processes in moderately damped YBaCuO
Josephson junctions / D. Massarotti, L. Longobardi, L. Galletti, D. Stornaiuolo,
G. Rotoli, F. Tafuri // Физика низких температур. — 2013. — Т. 39, № 3. — С. 378–383. — Бібліогр.: 37 назв. — англ. |
| series |
Физика низких температур |
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