Baryonic bound state of vortices in multicomponent superconductors

Muneto Nitta; Minoru Eto; Toshiaki Fujimori; Keisuke Ohashi

doi:10.1143/JPSJ.81.084711

Baryonic bound state of vortices in multicomponent superconductors

Muneto Nitta, Minoru Eto, Toshiaki Fujimori, Keisuke Ohashi

Faculty of Business and Commerce

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

25 Citations (Scopus)

Abstract

We construct a bound state of three 1/3-quantized Josephson coupled vortices in three-component superconductors with intrinsic Josephson couplings, which may be relevant with regard to iron-based superconductors. We find a Yshaped junction of three domain walls connecting the three vortices, resembling the baryonic bound state of three quarks in QCD. The appearance of the Y-junction (but not a δ-junction) implies that in both cases of superconductors and QCD, the bound state is described by a genuine three-body interaction (but not by the sum of two-body interactions). We also discuss a confinement/deconfinement phase transition.

Original language	English
Article number	084711
Journal	Journal of the Physical Society of Japan
Volume	81
Issue number	8
DOIs	https://doi.org/10.1143/JPSJ.81.084711
Publication status	Published - 2012 Aug

Keywords

Baryon
Confinement
Fractional flux quanta
Ginzburg-Landau free energy
Interband phase difference soliton
Meson
Multi-band superconductor
QCD
Vortices

ASJC Scopus subject areas

Physics and Astronomy(all)

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AU - Nitta, Muneto

AU - Eto, Minoru

AU - Fujimori, Toshiaki

AU - Ohashi, Keisuke

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AB - We construct a bound state of three 1/3-quantized Josephson coupled vortices in three-component superconductors with intrinsic Josephson couplings, which may be relevant with regard to iron-based superconductors. We find a Yshaped junction of three domain walls connecting the three vortices, resembling the baryonic bound state of three quarks in QCD. The appearance of the Y-junction (but not a δ-junction) implies that in both cases of superconductors and QCD, the bound state is described by a genuine three-body interaction (but not by the sum of two-body interactions). We also discuss a confinement/deconfinement phase transition.

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KW - Confinement

KW - Fractional flux quanta

KW - Ginzburg-Landau free energy

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KW - QCD

KW - Vortices

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Baryonic bound state of vortices in multicomponent superconductors

Abstract

Keywords

ASJC Scopus subject areas

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