Baryonic bound state of vortices in multicomponent superconductors

Muneto Nitta, Minoru Eto, Toshiaki Fujimori, Keisuke Ohashi

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


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
Issue number8
Publication statusPublished - 2012 Aug


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

ASJC Scopus subject areas

  • General Physics and Astronomy


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