The principal purpose of this topical review is to single out some of the universal features of
high-temperature (high-T c) and related strongly-correlated systems, which can be …

We study two mechanisms for enhancing the superconducting mean-field transition
temperature T c by nonmagnetic disorder in both conventional (sign-preserving gaps) and …

Phase-sensitive measurements of the superconducting gap in Fe-based superconductors
have proven more difficult than originally anticipated. While quasiparticle interference (QPI) …

A highly anisotropic superconducting gap is found in single crystals of FeSe by studying the
London penetration depth Δ λ measured down to 50 mK in samples before and after 2.5 …

We report the electric transport and thermodynamic properties of the skutterudite-related La
3 Co 4 Sn 13 and La 3 Rh 4 Sn 13 superconductors. Applying an external pressure to La 3 …

We investigated the effect of enhancement of superconducting transition temperature T c by
nonmagnetic atom disorder in the series of filled skutterudite-related compounds (La 3 M 4 …

Materials-realistic microscopic theoretical descriptions of copper-based superconductors are
challenging due to their complex crystal structures combined with strong electron …

We study disorder-induced magnetism within the Gutzwiller approximation applied to the t−
J model relevant for cuprate superconductors. In particular, we show how disorder …

We show that electron-magnon interaction delocalizes the particle in a system with strong
charge disorder. The analysis is based on results obtained for a single hole in the one …

Abstract La 3 Co 4 Sn 13 and La 3 Ru 4 Sn 13 were categorized as BCS superconductors.
In a plot of the critical field H c2 vs T, La 3 Ru 4 Sn 13 displays a second superconducting …