Multicomponent superconductivity is realized in multiband superconductors when an
interband pairing interaction is considerably weaker than the intraband interactions. There is …

This article reviews theoretical and experimental work on the novel physics in multiband
superconductors. Multiband superconductors are characterized by multiple superconducting …

In general, magnetism and superconductivity are antagonistic to each other. However, there
are several families of superconductors in which superconductivity coexists with magnetism …

The superconducting state with the usual 2 e flux quantization formed from a normal state
with 3 Q charge density or loop-current order is a linear combination of 3 different paired …

The multipocket Fermi surfaces of iron-based superconductors promote pairing states with
both extended s-wave and d-wave symmetry. We argue that the competition between these …

The Leggett mode associated with out-of-phase oscillations of the superconducting phase in
multiband superconductors usually is heavy due to interband coupling, which makes its …

We report the experimental formation of a fractional vortex generated by using a thin
superconducting bi-layer in the form of a niobium bi-layer, observed as a magnetic flux …

We derive microscopically the Ginzburg-Landau free-energy functional for a superconductor
in which the Cooper pairs are formed not only by quasiparticles from the same band, but …

We investigate some significant properties of multi-band superconductors. They are time-
reversal symmetry breaking, chirality and fractional quantum flux vortices in three-band …

A time-reversal-symmetry-broken (TRSB) superconductivity can be induced by sign-
reversed intercomponent couplings in superconductors with three components or above …