Nonmonotonic temperature dependence of critical current in diffusive d-wave junctions

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

doi:10.1103/PhysRevB.73.140504

Nonmonotonic temperature dependence of critical current in diffusive d-wave junctions

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

Faculty of Science and Technology

Research output: Contribution to journal › Article › Academic › peer-review

16 Citations (Scopus)

2 Downloads (Pure)

Abstract

We study the Josephson effect in D/I/DN/I/D junctions, where I, DN, and D denote an insulator, a diffusive normal metal, and a d-wave superconductor, respectively. The Josephson current is calculated based on the quasiclassical Green's function theory with a general boundary condition for unconventional superconducting junctions. In contrast to s-wave junctions, the product of the Josephson current and the normal-state resistance is enhanced by making the interface barriers stronger. The Josephson current has a nonmonotonic temperature dependence due to the competition between the proximity effect and the midgap Andreev resonant states.

Original language	Undefined
Pages (from-to)	14050R-
Journal	Physical review B: Condensed matter and materials physics
Volume	73
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.73.140504
Publication status	Published - 2006

Keywords

METIS-233430
IR-59093

Access to Document

10.1103/PhysRevB.73.140504

Cite this

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title = "Nonmonotonic temperature dependence of critical current in diffusive d-wave junctions",

abstract = "We study the Josephson effect in D/I/DN/I/D junctions, where I, DN, and D denote an insulator, a diffusive normal metal, and a d-wave superconductor, respectively. The Josephson current is calculated based on the quasiclassical Green's function theory with a general boundary condition for unconventional superconducting junctions. In contrast to s-wave junctions, the product of the Josephson current and the normal-state resistance is enhanced by making the interface barriers stronger. The Josephson current has a nonmonotonic temperature dependence due to the competition between the proximity effect and the midgap Andreev resonant states.",

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T1 - Nonmonotonic temperature dependence of critical current in diffusive d-wave junctions

AU - Yokoyama, T.

AU - Tanaka, Y.

AU - Golubov, Alexandre Avraamovitch

AU - Asano, Y.

PY - 2006

Y1 - 2006

N2 - We study the Josephson effect in D/I/DN/I/D junctions, where I, DN, and D denote an insulator, a diffusive normal metal, and a d-wave superconductor, respectively. The Josephson current is calculated based on the quasiclassical Green's function theory with a general boundary condition for unconventional superconducting junctions. In contrast to s-wave junctions, the product of the Josephson current and the normal-state resistance is enhanced by making the interface barriers stronger. The Josephson current has a nonmonotonic temperature dependence due to the competition between the proximity effect and the midgap Andreev resonant states.

AB - We study the Josephson effect in D/I/DN/I/D junctions, where I, DN, and D denote an insulator, a diffusive normal metal, and a d-wave superconductor, respectively. The Josephson current is calculated based on the quasiclassical Green's function theory with a general boundary condition for unconventional superconducting junctions. In contrast to s-wave junctions, the product of the Josephson current and the normal-state resistance is enhanced by making the interface barriers stronger. The Josephson current has a nonmonotonic temperature dependence due to the competition between the proximity effect and the midgap Andreev resonant states.

KW - METIS-233430

KW - IR-59093

U2 - 10.1103/PhysRevB.73.140504

DO - 10.1103/PhysRevB.73.140504

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SP - 14050R-

JO - Physical review B: Condensed matter and materials physics

JF - Physical review B: Condensed matter and materials physics

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