Pairing symmetry is a fundamental property that characterizes a superconductor. For the iron-
based high-temperature superconductors,, an s±-wave pairing symmetry has received …

Its direct momentum sensitivity confers to angle-resolved photoemission spectroscopy
(ARPES) a unique perspective in investigating the superconducting gap of multi-band …

Single-layer FeSe films with an extremely expanded in-plane lattice constant of 3.99±0.02 Å
are fabricated by epitaxially growing FeSe/Nb: SrTiO 3/KTaO 3 heterostructures and studied …

In the presence of both space and time reversal symmetries, an s-wave A 1 g
superconducting state is usually topologically trivial. Here, we demonstrate that an exception …

FeSe exhibits a novel ground state in which superconductivity coexists with a nematic order
in the absence of any long-range magnetic order. Here, we report on an angle-resolved …

The dual-fermion approach offers a way to perform diagrammatic expansion around the
dynamical mean field theory. Using this formalism, the influence of antiferromagnetic …

Although iron-based superconductors are multiorbital systems with complicated band
structures, we demonstrate that the low-energy physics which is responsible for their high-T …

Using self-consistent mean-field and functional renormalization-group approaches, we show
that s-wave pairing symmetry is robust in the heavily electron-doped iron chalcogenides A …

Although a nodeless superconducting gap has been observed on the large Fermi pockets
around the zone corner in K x Fe 2− y Se 2, whether its pairing symmetry is s wave or …

In this review article, we give a brief overview of heavy fermions, which are prototype
examples of strongly correlated electron systems. We introduce the application of physical …