Quasiclassical Green's function theory of the Josephson effect in chiral p-wave superconductor/diffusive normal metal/chiral p-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 whic...
Main Authors: | , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
American Physical Society
2007
|
Subjects: | |
Online Access: | http://purl.utwente.nl/publications/59121 |
id |
ftunivtwente:oai:doc.utwente.nl:59121 |
---|---|
record_format |
openpolar |
spelling |
ftunivtwente:oai:doc.utwente.nl:59121 2023-05-15T16:55:51+02:00 Quasiclassical Green's function theory of the Josephson effect in chiral p-wave superconductor/diffusive normal metal/chiral p-wave superconductor junctions Sawa, Y. Yokoyama, T. Tanaka, Y. Golubov, A.A. 2007 application/pdf http://purl.utwente.nl/publications/59121 unknown American Physical Society http://doc.utwente.nl/59121/1/quasiclassical_green%27s.pdf http://purl.utwente.nl/publications/59121 © 2007 American Physical Society Article / Letter to editor 2007 ftunivtwente 2016-10-26T22:14:16Z 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 odd-frequency 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 toexp(−L/xi), where xi 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-pi 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. Article in Journal/Newspaper IPY University of Twente Publications |
institution |
Open Polar |
collection |
University of Twente Publications |
op_collection_id |
ftunivtwente |
language |
unknown |
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 odd-frequency 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 toexp(−L/xi), where xi 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-pi 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. |
format |
Article in Journal/Newspaper |
author |
Sawa, Y. Yokoyama, T. Tanaka, Y. Golubov, A.A. |
spellingShingle |
Sawa, Y. Yokoyama, T. Tanaka, Y. Golubov, A.A. Quasiclassical Green's function theory of the Josephson effect in chiral p-wave superconductor/diffusive normal metal/chiral p-wave superconductor junctions |
author_facet |
Sawa, Y. Yokoyama, T. Tanaka, Y. Golubov, A.A. |
author_sort |
Sawa, Y. |
title |
Quasiclassical Green's function theory of the Josephson effect in chiral p-wave superconductor/diffusive normal metal/chiral p-wave superconductor junctions |
title_short |
Quasiclassical Green's function theory of the Josephson effect in chiral p-wave superconductor/diffusive normal metal/chiral p-wave superconductor junctions |
title_full |
Quasiclassical Green's function theory of the Josephson effect in chiral p-wave superconductor/diffusive normal metal/chiral p-wave superconductor junctions |
title_fullStr |
Quasiclassical Green's function theory of the Josephson effect in chiral p-wave superconductor/diffusive normal metal/chiral p-wave superconductor junctions |
title_full_unstemmed |
Quasiclassical Green's function theory of the Josephson effect in chiral p-wave superconductor/diffusive normal metal/chiral p-wave superconductor junctions |
title_sort |
quasiclassical green's function theory of the josephson effect in chiral p-wave superconductor/diffusive normal metal/chiral p-wave superconductor junctions |
publisher |
American Physical Society |
publishDate |
2007 |
url |
http://purl.utwente.nl/publications/59121 |
genre |
IPY |
genre_facet |
IPY |
op_relation |
http://doc.utwente.nl/59121/1/quasiclassical_green%27s.pdf http://purl.utwente.nl/publications/59121 |
op_rights |
© 2007 American Physical Society |
_version_ |
1766046896259858432 |