A conventional superconductor is described by a single complex order parameter field
which has two fundamental length scales, the magnetic field penetration depth λ and the …

In general a superconducting state breaks multiple symmetries and, therefore, is
characterized by several different coherence lengths ξ i, i= 1,…, N. Moreover in multiband …

In contrast to single-component superconductors, which are described at the level of
Ginzburg-Landau theory by a single parameter κ and are divided in type-I κ< 1/2 and type-II …

The recent discovery of iron pnictide superconductors has resulted in a rapidly growing
interest in multiband models with more than two bands. In this work we specifically focus on …

Usual superconductors are classified into two categories: of type-1 when the ratio of the
magnetic field penetration length (λ) to coherence length (ξ) κ=λ/ξ<1/2 and of type-2 when …

We show that in multiband superconductors, even an extremely small interband proximity
effect can lead to a qualitative change in the interaction potential between superconducting …

We show that a clean multiband superconductor may display one or several phase
transitions with increasing temperature from or to chiral superconducting states with broken …

The phenomenological theory of superconductors with a many-component order parameter
(OP) is developed. On the basis of a generalized Ginzburg-Landau functional, equations for …

Microscopic theory of type-1.5 superconductivity in multiband systems Page 1 PHYSICAL
REVIEW B 84, 094515 (2011) Microscopic theory of type-1.5 superconductivity in multiband …

We present a study of Zeeman splitting effects in the phase diagram of multiple-band
superconductors. In the particular case of a two-band superconductor, several free energy …