Current-phase relations in SIsFS junctions in the vicinity of 0- π transition

S. V. Bakurskiy, V. I. Filippov, V. I. Ruzhickiy, N.V. Klenov, I.I. Soloviev, M. Yu Kupriyanov, A. A. Golubov

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Abstract

We consider the current-phase relation (CPR) in Josephson junctions with complex insulator-superconductor-ferromagnetic interlayers in the vicinity of the 0-π transition. We find a strong impact of the second harmonic on the CPR of the junctions. It is shown that the critical current can be kept constant in the region of 0-π transition, while the CPR transforms through multivalued hysteretic states depending on the relative values of tunnel transparency and magnetic thickness. Moreover, the CPR in the transition region has multiple branches with distinct ground states.

Original languageEnglish
Article number094522
JournalPhysical review B: Covering condensed matter and materials physics
Volume95
Issue number9
DOIs
Publication statusPublished - 31 Mar 2017

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Critical currents
Electron transitions
Transparency
Ground state
Superconducting materials
Tunnels
Josephson junctions
tunnels
interlayers
critical current
insulators
harmonics
ground state

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Bakurskiy, S. V. ; Filippov, V. I. ; Ruzhickiy, V. I. ; Klenov, N.V. ; Soloviev, I.I. ; Kupriyanov, M. Yu ; Golubov, A. A. / Current-phase relations in SIsFS junctions in the vicinity of 0- π transition. In: Physical review B: Covering condensed matter and materials physics. 2017 ; Vol. 95, No. 9.
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Current-phase relations in SIsFS junctions in the vicinity of 0- π transition. / Bakurskiy, S. V.; Filippov, V. I.; Ruzhickiy, V. I.; Klenov, N.V.; Soloviev, I.I.; Kupriyanov, M. Yu; Golubov, A. A.

In: Physical review B: Covering condensed matter and materials physics, Vol. 95, No. 9, 094522, 31.03.2017.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Bakurskiy, S. V.

AU - Filippov, V. I.

AU - Ruzhickiy, V. I.

AU - Klenov, N.V.

AU - Soloviev, I.I.

AU - Kupriyanov, M. Yu

AU - Golubov, A. A.

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AB - We consider the current-phase relation (CPR) in Josephson junctions with complex insulator-superconductor-ferromagnetic interlayers in the vicinity of the 0-π transition. We find a strong impact of the second harmonic on the CPR of the junctions. It is shown that the critical current can be kept constant in the region of 0-π transition, while the CPR transforms through multivalued hysteretic states depending on the relative values of tunnel transparency and magnetic thickness. Moreover, the CPR in the transition region has multiple branches with distinct ground states.

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