Superconductivity develops in metals upon the formation of a coherent macroscopic
quantum state of electron pairs. Iron pnictides and chalcogenides are materials that have …

High-temperature superconductivity and a wide variety of exotic superconducting states
discovered in FeSe-based materials have been at the frontier of research on condensed …

Inspired by a recent experiment showing that La 3 Ni 2 O 7 exhibits high T c
superconductivity under high pressure, we theoretically revisit the possibility of …

Topological materials and unconventional iron-based superconductors are both important
areas of study but, to date, relatively little overlap has been identified between these two …

The pair density wave (PDW) is a superconducting state in which Cooper pairs carry centre-
of-mass momentum in equilibrium, leading to the breaking of translational symmetry …

Epitaxial engineering of solid state heterointerfaces is a leading avenue to realizing
enhanced or novel electronic states of matter. As a recent example, bulk FeSe is an …

I review theoretical ideas and implications of experiments for the gap structure and symmetry
of the Fe-based superconductors. Unlike any other class of unconventional …

The crossover from the superconductivity of the Bardeen-Cooper-Schrieffer (BCS) regime to
the Bose-Einstein condensation (BEC) regime holds a key to understanding the nature of …

Over the last decade, the possibility of realizing topological superconductivity (TSC) has
generated much excitement. TSC can be created in electronic systems where the …

We analyze the interplay between superconductivity and the formation of bound pairs of
fermions (BCS-BEC crossover) in a 2D model of interacting fermions with small Fermi …