Quasiclassical Green's function theory of the Josephson effect in chiral ρ-wave superconductor/diffusive normal metal/chiral ρ-wave superconductor junctions
We study the Josephson effect in chiral p-wave superconductor/diffusive normal metal (DN)/chiral p-wave superconductor (CP/DN/CP) junctions using quasiclassical Green’s function formalism with proper boundary conditions. The px+ipy-wave symmetry of superconducting order parameter is chosen which is...
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American Physical Society
2007
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ftnagoyauniv:oai:nagoya.repo.nii.ac.jp:00007149 2023-05-15T16:55:51+02:00 Quasiclassical Green's function theory of the Josephson effect in chiral ρ-wave superconductor/diffusive normal metal/chiral ρ-wave superconductor junctions Sawa, Y. 19334 Yokoyama, T. 19335 Tanaka, Y. 19336 A.A., Golubov 19337 2007-04 application/pdf http://hdl.handle.net/2237/8824 https://nagoya.repo.nii.ac.jp/record/7149/files/PhysRevB_75-134508.pdf eng eng American Physical Society https://doi.org/10.1103/PhysRevB.75.134508 PHYSICAL REVIEW B 13 75 134508 http://hdl.handle.net/2237/8824 1098-0121 https://nagoya.repo.nii.ac.jp/record/7149/files/PhysRevB_75-134508.pdf Copyright: American Physical Society, All rights reserved. 2007 ftnagoyauniv https://doi.org/10.1103/PhysRevB.75.134508 2023-02-20T15:52:53Z We study the Josephson effect in chiral p-wave superconductor/diffusive normal metal (DN)/chiral p-wave superconductor (CP/DN/CP) junctions using quasiclassical Green’s function formalism with proper boundary conditions. The px+ipy-wave symmetry of superconducting order parameter is chosen which is believed to be the pairing state in Sr2RuO4. We show that the superconducting pair amplitude induced in DN has an oddfrequency spin-triplet s-wave symmetry and is an odd function of Matsubara frequency. Despite the peculiar symmetry properties of the Cooper pairs, the behavior of the Josephson current is rather conventional. We have found that the current-phase relation is almost sinusoidal and the Josephson current is proportional to exp(−L/ξ), where ξ is the coherence length in DN and L is the thickness of the DN layer. We also calculate the Josephson current in CP/diffusive ferromagnet metal/CP junctions and show that the 0-π transition can be realized by varying temperature or thickness L similar to the case of conventional s-wave junctions. The obtained results may help to explore the properties of superconducting state in Sr2RuO4. journal article Other/Unknown Material IPY Nagoya University: NAGOYA Repository Physical Review B 75 13 |
institution |
Open Polar |
collection |
Nagoya University: NAGOYA Repository |
op_collection_id |
ftnagoyauniv |
language |
English |
description |
We study the Josephson effect in chiral p-wave superconductor/diffusive normal metal (DN)/chiral p-wave superconductor (CP/DN/CP) junctions using quasiclassical Green’s function formalism with proper boundary conditions. The px+ipy-wave symmetry of superconducting order parameter is chosen which is believed to be the pairing state in Sr2RuO4. We show that the superconducting pair amplitude induced in DN has an oddfrequency spin-triplet s-wave symmetry and is an odd function of Matsubara frequency. Despite the peculiar symmetry properties of the Cooper pairs, the behavior of the Josephson current is rather conventional. We have found that the current-phase relation is almost sinusoidal and the Josephson current is proportional to exp(−L/ξ), where ξ is the coherence length in DN and L is the thickness of the DN layer. We also calculate the Josephson current in CP/diffusive ferromagnet metal/CP junctions and show that the 0-π transition can be realized by varying temperature or thickness L similar to the case of conventional s-wave junctions. The obtained results may help to explore the properties of superconducting state in Sr2RuO4. journal article |
author |
Sawa, Y. 19334 Yokoyama, T. 19335 Tanaka, Y. 19336 A.A., Golubov 19337 |
spellingShingle |
Sawa, Y. 19334 Yokoyama, T. 19335 Tanaka, Y. 19336 A.A., Golubov 19337 Quasiclassical Green's function theory of the Josephson effect in chiral ρ-wave superconductor/diffusive normal metal/chiral ρ-wave superconductor junctions |
author_facet |
Sawa, Y. 19334 Yokoyama, T. 19335 Tanaka, Y. 19336 A.A., Golubov 19337 |
author_sort |
Sawa, Y. |
title |
Quasiclassical Green's function theory of the Josephson effect in chiral ρ-wave superconductor/diffusive normal metal/chiral ρ-wave superconductor junctions |
title_short |
Quasiclassical Green's function theory of the Josephson effect in chiral ρ-wave superconductor/diffusive normal metal/chiral ρ-wave superconductor junctions |
title_full |
Quasiclassical Green's function theory of the Josephson effect in chiral ρ-wave superconductor/diffusive normal metal/chiral ρ-wave superconductor junctions |
title_fullStr |
Quasiclassical Green's function theory of the Josephson effect in chiral ρ-wave superconductor/diffusive normal metal/chiral ρ-wave superconductor junctions |
title_full_unstemmed |
Quasiclassical Green's function theory of the Josephson effect in chiral ρ-wave superconductor/diffusive normal metal/chiral ρ-wave superconductor junctions |
title_sort |
quasiclassical green's function theory of the josephson effect in chiral ρ-wave superconductor/diffusive normal metal/chiral ρ-wave superconductor junctions |
publisher |
American Physical Society |
publishDate |
2007 |
url |
http://hdl.handle.net/2237/8824 https://nagoya.repo.nii.ac.jp/record/7149/files/PhysRevB_75-134508.pdf |
genre |
IPY |
genre_facet |
IPY |
op_relation |
https://doi.org/10.1103/PhysRevB.75.134508 PHYSICAL REVIEW B 13 75 134508 http://hdl.handle.net/2237/8824 1098-0121 https://nagoya.repo.nii.ac.jp/record/7149/files/PhysRevB_75-134508.pdf |
op_rights |
Copyright: American Physical Society, All rights reserved. |
op_doi |
https://doi.org/10.1103/PhysRevB.75.134508 |
container_title |
Physical Review B |
container_volume |
75 |
container_issue |
13 |
_version_ |
1766046895926411264 |