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Theory of quantum transport in Josephson junctions with a ferromagnetic insulator
Репозиторій DSpace/Manakin
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Theory of quantum transport in Josephson junctions with a ferromagnetic insulator
Тема:
Quantum coherent effects in superconductors and normal metals
Інший ID:
PACS: 74.50.+r, 72.25.–b, 85.75.–d, 03.67.Lx
Посилання:
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.
Підтримка:
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).
Дата:
2010
Переглядів:
793
Завантажень:
472
Анотація:
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.
