Baryonic bound state of vortices in multicomponent superconductors

Muneto Nitta, Minoru Eto, Toshiaki Fujimori, Keisuke Ohashi

Research output: Contribution to journalArticle

24 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 languageEnglish
Article number084711
JournalJournal of the Physical Society of Japan
Volume81
Issue number8
DOIs
Publication statusPublished - 2012 Aug

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vortices
quantum chromodynamics
domain wall
interactions
quarks
iron

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)

Cite this

Baryonic bound state of vortices in multicomponent superconductors. / Nitta, Muneto; Eto, Minoru; Fujimori, Toshiaki; Ohashi, Keisuke.

In: Journal of the Physical Society of Japan, Vol. 81, No. 8, 084711, 08.2012.

Research output: Contribution to journalArticle

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