On the remarkable superconductivity of FeSe and its close cousins
Emergent electronic phenomena in iron-based superconductors have been at the forefront
of condensed matter physics for more than a decade. Much has been learned about the …
of condensed matter physics for more than a decade. Much has been learned about the …
The puzzle of high temperature superconductivity in layered iron pnictides and chalcogenides
DC Johnston - Advances in Physics, 2010 - Taylor & Francis
The response of the worldwide scientific community to the discovery in 2008 of
superconductivity at T c= 26 K in the Fe-based compound LaFeAsO1− x F x has been very …
superconductivity at T c= 26 K in the Fe-based compound LaFeAsO1− x F x has been very …
Gap symmetry and structure of Fe-based superconductors
The recently discovered Fe-pnictide and chalcogenide superconductors display low-
temperature properties suggesting superconducting gap structures which appear to vary …
temperature properties suggesting superconducting gap structures which appear to vary …
Preemptive nematic order, pseudogap, and orbital order in the iron pnictides
Starting from a microscopic itinerant model, we derive and analyze the effective low-energy
model for collective magnetic excitations in the iron pnictides. We show that the stripe …
model for collective magnetic excitations in the iron pnictides. We show that the stripe …
Evidence for a Lifshitz transition in electron-doped iron arsenic superconductors at the onset of superconductivity
The iron arsenic high-temperature superconductors, exhibit particularly rich phase
diagrams. In the AE (Fe1− x T x) 2As2 family (known as '122', with AE being Ca, Sr or Ba and …
diagrams. In the AE (Fe1− x T x) 2As2 family (known as '122', with AE being Ca, Sr or Ba and …
Competing order and nature of the pairing state in the iron pnictides
We show that the competition between magnetism and superconductivity can be used to
determine the pairing state in the iron arsenides. To this end we demonstrate that the …
determine the pairing state in the iron arsenides. To this end we demonstrate that the …
Orbital order and spontaneous orthorhombicity in iron pnictides
A growing list of experiments show orthorhombic electronic anisotropy in the iron pnictides,
in some cases at temperatures well above the spin-density-wave transition. These …
in some cases at temperatures well above the spin-density-wave transition. These …
Manifestations of nematic degrees of freedom in the magnetic, elastic, and superconducting properties of the iron pnictides
We investigate how emergent nematic order and nematic fluctuations affect several
macroscopic properties of both the normal and superconducting states of the iron pnictides …
macroscopic properties of both the normal and superconducting states of the iron pnictides …
state with broken time-reversal symmetry in Fe-based superconductors
We analyze the evolution of the superconducting gap structure in strongly hole-doped Ba 1−
x K x Fe 2 As 2 between x= 1 and x∼ 0.4 (optimal do**). In the latter case, the pairing …
x K x Fe 2 As 2 between x= 1 and x∼ 0.4 (optimal do**). In the latter case, the pairing …
Nematicity as a probe of superconducting pairing in iron-based superconductors
In several families of iron-based superconducting materials, ad-wave pairing instability may
compete with the leading s-wave instability. Here, we show that when both states have …
compete with the leading s-wave instability. Here, we show that when both states have …