Theory of Josephson effect in Sr2RuO4/diffusive normal metal/Sr2RuO4 junctions

Y. Sawa; T. Yokoyama; Y. Tanaka; Alexandre Avraamovitch Golubov

doi:10.1016/j.physc.2007.02.035

Theory of Josephson effect in Sr2RuO4/diffusive normal metal/Sr2RuO4 junctions

Y. Sawa, T. Yokoyama, Y. Tanaka, Alexandre Avraamovitch Golubov

Faculty of Science and Technology

Research output: Contribution to journal › Article › Academic

Abstract

We derive a generalized Nazarov’s boundary condition for diffusive normal metal (DN)/chiral p-wave superconductor (CP) interface including the macroscopic phase of the superconductor. The Josephson effect is studied in CP/DN/CP junctions solving the Usadel equations under the above boundary condition. We find that, enhancement of a critical current at low temperature is small compared with that in px-wave /DN/px-wave junctions. As a result, temperature dependence of the critical current in these junctions is similar to that in conventional junctions. The result is consistent with the experiment in Sr2RuO4–Sr3RuO7 eutectic junctions. Similar feature is also found in current–phase relation.

Original language	Undefined
Pages (from-to)	997-1000
Journal	Physica C
Volume	463-465
DOIs	https://doi.org/10.1016/j.physc.2007.02.035
Publication status	Published - 2007

Keywords

Proximity effect
Josephson effect
Sr2RuO4
IR-78866

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10.1016/j.physc.2007.02.035

Cite this

@article{46ee73c5bc1740af999705dc4c10d7ae,

title = "Theory of Josephson effect in Sr2RuO4/diffusive normal metal/Sr2RuO4 junctions",

abstract = "We derive a generalized Nazarov{\textquoteright}s boundary condition for diffusive normal metal (DN)/chiral p-wave superconductor (CP) interface including the macroscopic phase of the superconductor. The Josephson effect is studied in CP/DN/CP junctions solving the Usadel equations under the above boundary condition. We find that, enhancement of a critical current at low temperature is small compared with that in px-wave /DN/px-wave junctions. As a result, temperature dependence of the critical current in these junctions is similar to that in conventional junctions. The result is consistent with the experiment in Sr2RuO4–Sr3RuO7 eutectic junctions. Similar feature is also found in current–phase relation.",

keywords = "Proximity effect, Josephson effect, Sr2RuO4, IR-78866",

author = "Y. Sawa and T. Yokoyama and Y. Tanaka and Golubov, {Alexandre Avraamovitch}",

year = "2007",

doi = "10.1016/j.physc.2007.02.035",

language = "Undefined",

volume = "463-465",

pages = "997--1000",

journal = "Physica C",

issn = "0921-4534",

publisher = "Elsevier",

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TY - JOUR

T1 - Theory of Josephson effect in Sr2RuO4/diffusive normal metal/Sr2RuO4 junctions

AU - Sawa, Y.

AU - Yokoyama, T.

AU - Tanaka, Y.

AU - Golubov, Alexandre Avraamovitch

PY - 2007

Y1 - 2007

N2 - We derive a generalized Nazarov’s boundary condition for diffusive normal metal (DN)/chiral p-wave superconductor (CP) interface including the macroscopic phase of the superconductor. The Josephson effect is studied in CP/DN/CP junctions solving the Usadel equations under the above boundary condition. We find that, enhancement of a critical current at low temperature is small compared with that in px-wave /DN/px-wave junctions. As a result, temperature dependence of the critical current in these junctions is similar to that in conventional junctions. The result is consistent with the experiment in Sr2RuO4–Sr3RuO7 eutectic junctions. Similar feature is also found in current–phase relation.

AB - We derive a generalized Nazarov’s boundary condition for diffusive normal metal (DN)/chiral p-wave superconductor (CP) interface including the macroscopic phase of the superconductor. The Josephson effect is studied in CP/DN/CP junctions solving the Usadel equations under the above boundary condition. We find that, enhancement of a critical current at low temperature is small compared with that in px-wave /DN/px-wave junctions. As a result, temperature dependence of the critical current in these junctions is similar to that in conventional junctions. The result is consistent with the experiment in Sr2RuO4–Sr3RuO7 eutectic junctions. Similar feature is also found in current–phase relation.

KW - Proximity effect

KW - Josephson effect

KW - Sr2RuO4

KW - IR-78866

U2 - 10.1016/j.physc.2007.02.035

DO - 10.1016/j.physc.2007.02.035

M3 - Article

SN - 0921-4534

VL - 463-465

SP - 997

EP - 1000

JO - Physica C

JF - Physica C

ER -