In the last years it has been shown that some properties of strongly coupled
superconductors can be potentially described by classical general relativity living in one …

Two-band superconductivity has become an important topic over the past ten years.
Extensive experimental and theoretical studies started with MgB 2 and are now focused on …

Discussing changes over the last two decades, this book represents an up-to-date treatment
of superfluidity. It covers new superfluid materials such as high-temperature and …

Starting from first principles, we show the formation and evolution of superconducting gaps
in MgB 2 at its ultrathin limit. Atomically thin MgB 2 is distinctly different from bulk MgB 2 in …

The observation of vortices in superconductors was a major breakthrough in developing the
conceptual background for superconducting applications. Each vortex carries a flux …

It is shown that under certain conditions, three-component superconductors (and, in
particular, three-band systems) allow stable topological defects different from vortices. We …

In contrast to MgB 2 superconducting at 39 K, the isostructural AlB 2 has no
superconductivity due to the absence of metallization driven by the covalent state of boron in …

Arguments were recently advanced that hole-doped Ba 1− x K x Fe 2 As 2 exhibits the s+ is
state at certain doping. Spontaneous breaking of time-reversal symmetry in the s+ is state …

Neutron stars are astrophysical laboratories of many extremes of physics. Their rich
phenomenology provides insights into the state and composition of matter at densities which …

Using a phenomenological Ginzburg–Landau model that includes entrainment, we identify
the possible ground states for the neutron and proton condensates in the core of a neutron …