Theory of quantum transport in Josephson junctions with a ferromagnetic insulator
We investigate the Josephson transport through ferromagnetic insulators (FIs) by taking into account the band structure of FIs explicitly. Using the recursive Green's function method, we found the formation of a π-junction in such systems. Moreover the atomic-scale 0–π oscillation is induced by...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2010 |
| Автори: | , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2010
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/117516 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Theory of quantum transport in Josephson junctions with a ferromagnetic insulator / S. Kawabata, Y. Asano // Физика низких температур. — 2010. — Т. 36, № 10-11. — С. 1143–1148. — Бібліогр.: 62 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862669725579870208 |
|---|---|
| author | Kawabata, S. Asano, Y. |
| author_facet | Kawabata, S. Asano, Y. |
| citation_txt | Theory of quantum transport in Josephson junctions with a ferromagnetic insulator / S. Kawabata, Y. Asano // Физика низких температур. — 2010. — Т. 36, № 10-11. — С. 1143–1148. — Бібліогр.: 62 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | We investigate the Josephson transport through ferromagnetic insulators (FIs) by taking into account the band structure of FIs explicitly. Using the recursive Green's function method, we found the formation of a π-junction in such systems. Moreover the atomic-scale 0–π oscillation is induced by increasing the thickness of FI and its oscillation period is universal, i.e., just single atomic layer. Based on these results, we show that stable π-state can be realized in junctions based on high-Tc superconductors with La₂BaCuO₅ barrier. Such FI-based Josephson junctions may become an element in the architecture of future quantum computers.
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| first_indexed | 2025-12-07T15:29:26Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-117516 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T15:29:26Z |
| publishDate | 2010 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Kawabata, S. Asano, Y. 2017-05-24T05:14:20Z 2017-05-24T05:14:20Z 2010 Theory of quantum transport in Josephson junctions with a ferromagnetic insulator / S. Kawabata, Y. Asano // Физика низких температур. — 2010. — Т. 36, № 10-11. — С. 1143–1148. — Бібліогр.: 62 назв. — англ. 0132-6414 PACS: 74.50.+r, 72.25.–b, 85.75.–d, 03.67.Lx https://nasplib.isofts.kiev.ua/handle/123456789/117516 We investigate the Josephson transport through ferromagnetic insulators (FIs) by taking into account the band structure of FIs explicitly. Using the recursive Green's function method, we found the formation of a π-junction in such systems. Moreover the atomic-scale 0–π oscillation is induced by increasing the thickness of FI and its oscillation period is universal, i.e., just single atomic layer. Based on these results, we show that stable π-state can be realized in junctions based on high-Tc superconductors with La₂BaCuO₅ barrier. Such FI-based Josephson junctions may become an element in the architecture of future quantum computers. This paper is based on the collaboration works with S. Kashiwaya, Y. Tanaka, and A.A. Golubov. We would like to thank J. Arts, A. Brinkman, M. Fogelström, H. Ito, T. Kato, P.J. Kelly, T. Löfwander, T. Nagahama, F. Nori, J. Pfeiffer, A.S. Vaenko, and M. Weides for useful discussions. This work was supported by CREST-JST, and a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture of Japan (Grant No. 22710096). en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Quantum coherent effects in superconductors and normal metals Theory of quantum transport in Josephson junctions with a ferromagnetic insulator Article published earlier |
| spellingShingle | Theory of quantum transport in Josephson junctions with a ferromagnetic insulator Kawabata, S. Asano, Y. Quantum coherent effects in superconductors and normal metals |
| title | Theory of quantum transport in Josephson junctions with a ferromagnetic insulator |
| title_full | Theory of quantum transport in Josephson junctions with a ferromagnetic insulator |
| title_fullStr | Theory of quantum transport in Josephson junctions with a ferromagnetic insulator |
| title_full_unstemmed | Theory of quantum transport in Josephson junctions with a ferromagnetic insulator |
| title_short | Theory of quantum transport in Josephson junctions with a ferromagnetic insulator |
| title_sort | theory of quantum transport in josephson junctions with a ferromagnetic insulator |
| topic | Quantum coherent effects in superconductors and normal metals |
| topic_facet | Quantum coherent effects in superconductors and normal metals |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/117516 |
| work_keys_str_mv | AT kawabatas theoryofquantumtransportinjosephsonjunctionswithaferromagneticinsulator AT asanoy theoryofquantumtransportinjosephsonjunctionswithaferromagneticinsulator |