Josephson half-quantized vortices in long square π junctions around d-dot

Masahiko Machida; Tomio Koyama; Masaru Kato; Takekazu Ishida

doi:10.1016/j.physc.2005.01.087

Josephson half-quantized vortices in long square π junctions around d-dot

Masahiko Machida, Tomio Koyama, Masaru Kato, Takekazu Ishida

Institute for Materials Research (IMR)

Research output: Contribution to journal › Conference article › peer-review

2 Citations (Scopus)

Abstract

We investigate patterns composed of four Josephson half-quantized vortices around a square dot of d-wave high-T_c superconductor (d-dot) embedded in the conventional superconductor matrix by solving the time-dependent Ginzburg-Landau equation considering the Josephson coupling between s and d-wave superconductors at the interface. With increasing the d-dot size, we find that possible patterns of Josephson half-quantized vortices around the d-dot change from 2 diagonal patterns to 6 patterns including non-diagonal ones. In array configurations of d-dots, these 2 and 6 patterns enable to create novel frustrated systems which are useful for computing devices.

Original language	English
Pages (from-to)	1566-1571
Number of pages	6
Journal	Physica C: Superconductivity and its applications
Volume	426-431
Issue number	II
DOIs	https://doi.org/10.1016/j.physc.2005.01.087
Publication status	Published - 2005 Oct 7
Event	Proceedings of the 17th Internatioanl Symposium on Superconductivity (ISS 2004) Advances in Superconductivity - Duration: 2004 Nov 23 → 2004 Nov 25

Keywords

Josephson half-quantized vortex
Josepshson coupling
Time-dependent Ginzburg-Landau equation
d-Dot

ASJC Scopus subject areas

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

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title = "Josephson half-quantized vortices in long square π junctions around d-dot",

abstract = "We investigate patterns composed of four Josephson half-quantized vortices around a square dot of d-wave high-Tc superconductor (d-dot) embedded in the conventional superconductor matrix by solving the time-dependent Ginzburg-Landau equation considering the Josephson coupling between s and d-wave superconductors at the interface. With increasing the d-dot size, we find that possible patterns of Josephson half-quantized vortices around the d-dot change from 2 diagonal patterns to 6 patterns including non-diagonal ones. In array configurations of d-dots, these 2 and 6 patterns enable to create novel frustrated systems which are useful for computing devices.",

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AU - Ishida, Takekazu

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N2 - We investigate patterns composed of four Josephson half-quantized vortices around a square dot of d-wave high-Tc superconductor (d-dot) embedded in the conventional superconductor matrix by solving the time-dependent Ginzburg-Landau equation considering the Josephson coupling between s and d-wave superconductors at the interface. With increasing the d-dot size, we find that possible patterns of Josephson half-quantized vortices around the d-dot change from 2 diagonal patterns to 6 patterns including non-diagonal ones. In array configurations of d-dots, these 2 and 6 patterns enable to create novel frustrated systems which are useful for computing devices.

AB - We investigate patterns composed of four Josephson half-quantized vortices around a square dot of d-wave high-Tc superconductor (d-dot) embedded in the conventional superconductor matrix by solving the time-dependent Ginzburg-Landau equation considering the Josephson coupling between s and d-wave superconductors at the interface. With increasing the d-dot size, we find that possible patterns of Josephson half-quantized vortices around the d-dot change from 2 diagonal patterns to 6 patterns including non-diagonal ones. In array configurations of d-dots, these 2 and 6 patterns enable to create novel frustrated systems which are useful for computing devices.

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