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 …

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 …

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 …

Scanning Hall probe microscopy has been used to study vortex structures in very-high-
quality single crystals of the unconventional superconductor Sr 2 RuO 4 (T c≅ 1.5 K). In …

Recent observation of unusual vortex patterns in MgB 2 single crystals raised speculations
about possible “type-1.5” superconductivity in two-band materials, mixing the properties of …

It is shown that within the Ginzburg-Landau (GL) approximation the order parameters Δ 1 (r,
T) and Δ 2 (r, T) in two-band superconductors vary on the same length scale, the difference …

The magnetic vortices in superconductors usually repel each other. Several cases are
discussed when the vortex interaction has an attractive tail, and thus a minimum, leading to …

Using the Ginzburg-Landau theory extended to the next-to-leading order, we determine
numerically the healing lengths of the two order parameters at the two-gap superconductor …

In the framework of London theory we study the unconventional magnetic state in two-
component superconductors with a finite density of fractional flux vortices stabilized near the …

We describe a semianalytic approach to the two-band Ginzburg-Landau theory, which
predicts the behavior of vortices in two-band superconductors. We show that the character of …