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 …

Isoelectronic substitution is an ideal tuning parameter to alter electronic states and
correlations in iron-based superconductors. As this substitution takes place outside the …

Abstract The BCS-BEC (Bardeen-Cooper-Schrieffer–Bose-Einstein-condensate) crossover
from strongly overlapping Cooper pairs to non-overlapping composite bosons in the strong …

When a symmetry-breaking phase of matter is suppressed to a quantum critical point (QCP)
at absolute zero, quantum-mechanical fluctuations proliferate. Such fluctuations can lead to …

Non-Fermi liquids are strange metals whose physical properties deviate qualitatively from
those of conventional metals due to strong quantum fluctuations. In this paper, we report …

The quantum vortex liquid (QVL) is an intriguing state of type-II superconductors in which
intense quantum fluctuations of the superconducting (SC) order parameter destroy the …

The nematic electronic state and its associated critical fluctuations have emerged as a
potential candidate for the superconducting pairing in various unconventional …

The existence of a nematic phase transition in iron-chalcogenide superconductors poses an
intriguing question about its impact on superconductivity. To understand the nature of this …

The study of the iron-based superconductor, FeSe, has resulted in various topics, such as
the interplay among superconductivity, nematicity, and magnetism, Bardeen-Cooper …

We analyze superconductivity in a multi-orbital fermionic system near the onset of a nematic
order, using doped FeSe as an example. We associate nematicity with spontaneous …