New developments in superconductivity, particularly through unexpected and often
surprising forms of superconducting materials, continue to excite the community and …

We review concepts and effects of electron correlations in the copper-oxide
superconductors. The purpose of this article is twofold. First, we provide an overview of …

Recent experiments with ultracold fermionic atoms in optical lattices have provided a
tuneable and clean realization of the attractive Hubbard model (AHM). In view of this …

The critical temperature for the attractive Hubbard model on a square lattice is determined
from the analysis of two independent quantities, the helicity modulus ρ s and the pairing …

We study quantum geometric contributions to the Berezinskii-Kosterlitz-Thouless (BKT)
transition temperature T BKT in the presence of fluctuations beyond BCS theory. Because …

For an electron gas with δ-function attraction, we investigate the crossover from weak-to
strong-coupling superconductivity in two and three dimensions. From mean-field theory we …

Apparently, some form of local superconducting pairing persists up to temperatures well
above the maximum observed T c in underdoped cuprates; ie, T c is suppressed due to the …

We investigate the impacts of the quantum geometry of Bloch states, specifically through the
band-resolved quantum-metric tensor, on Cooper pairing and flat-band superconductivity in …

A flattened electronic band is one of several possible routes for increasing the strength of the
pairing interactions in a superconductor. With this in mind, we show here that …

In this paper we address Lifshitz transition induced by applied external magnetic field in a
case of iron-based superconductors, in which a difference between the Fermi level and the …