Lattice model calculations for dx2-y2-wave Josephson junctions

Hiroki Tsuchiura; Yukio Tanaka; Masao Ogata; Satoshi Kashiwaya

doi:10.1016/S0921-4534(00)01716-0

Lattice model calculations for d_x2-y2-wave Josephson junctions

Hiroki Tsuchiura, Yukio Tanaka, Masao Ogata, Satoshi Kashiwaya

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

Abstract

The Josephson current-phase relations in d-wave/d-wave superconductor junctions in the tunnel limit are studied using the two-dimensional t-J model. The order parameters are determined in a self-consistent way within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. We find that the anomalous current-phase relation in (110) junctions obtained within a quasiclassical theory is qualitatively reproduced with microscopic model calculations. Our method can be applied to grain boundary junctions in which the atomic scale roughness should be taken into account.

Original language	English
Pages (from-to)	165-168
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	352
Issue number	1-4
DOIs	https://doi.org/10.1016/S0921-4534(00)01716-0
Publication status	Published - 2001 Apr
Externally published	Yes

Keywords

Josephson junctions
d-wave superconductor
t-J model

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4534(00)01716-0

Cite this

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title = "Lattice model calculations for dx2-y2-wave Josephson junctions",

abstract = "The Josephson current-phase relations in d-wave/d-wave superconductor junctions in the tunnel limit are studied using the two-dimensional t-J model. The order parameters are determined in a self-consistent way within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. We find that the anomalous current-phase relation in (110) junctions obtained within a quasiclassical theory is qualitatively reproduced with microscopic model calculations. Our method can be applied to grain boundary junctions in which the atomic scale roughness should be taken into account.",

keywords = "Josephson junctions, d-wave superconductor, t-J model",

author = "Hiroki Tsuchiura and Yukio Tanaka and Masao Ogata and Satoshi Kashiwaya",

note = "Funding Information: The authors wish to thank I. Iguchi, J. Inoue and H. Ito for useful discussions. This work is supported in part by a Grant-in-Aid for Creative Basic Research (08NP1201) of the Ministry from Education, Science, Sports and Culture. Numerical computation in this work was partially carried out at the Yukawa Institute Computer Facility, and the Supercomputer Center, Institute for Solid State Physics, University of Tokyo.",

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T1 - Lattice model calculations for dx2-y2-wave Josephson junctions

AU - Tsuchiura, Hiroki

AU - Tanaka, Yukio

AU - Ogata, Masao

AU - Kashiwaya, Satoshi

N1 - Funding Information: The authors wish to thank I. Iguchi, J. Inoue and H. Ito for useful discussions. This work is supported in part by a Grant-in-Aid for Creative Basic Research (08NP1201) of the Ministry from Education, Science, Sports and Culture. Numerical computation in this work was partially carried out at the Yukawa Institute Computer Facility, and the Supercomputer Center, Institute for Solid State Physics, University of Tokyo.

PY - 2001/4

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N2 - The Josephson current-phase relations in d-wave/d-wave superconductor junctions in the tunnel limit are studied using the two-dimensional t-J model. The order parameters are determined in a self-consistent way within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. We find that the anomalous current-phase relation in (110) junctions obtained within a quasiclassical theory is qualitatively reproduced with microscopic model calculations. Our method can be applied to grain boundary junctions in which the atomic scale roughness should be taken into account.

AB - The Josephson current-phase relations in d-wave/d-wave superconductor junctions in the tunnel limit are studied using the two-dimensional t-J model. The order parameters are determined in a self-consistent way within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. We find that the anomalous current-phase relation in (110) junctions obtained within a quasiclassical theory is qualitatively reproduced with microscopic model calculations. Our method can be applied to grain boundary junctions in which the atomic scale roughness should be taken into account.

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KW - t-J model

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