Colloquium: The unexpected properties of alkali metal iron <?format ?>selenide superconductors
E Dagotto - Reviews of modern physics, 2013 - APS
The iron-based superconductors that contain FeAs layers as the fundamental building block
in the crystal structures have been rationalized in the past using ideas based on the Fermi …
in the crystal structures have been rationalized in the past using ideas based on the Fermi …
A brief review on μSR studies of unconventional Fe- and Cr-based superconductors
Muon spin relaxation/rotation (μ SR) is a vital technique for probing the superconducting gap
structure, pairing symmetry and time reversal symmetry breaking, enabling an …
structure, pairing symmetry and time reversal symmetry breaking, enabling an …
Vertical Line Nodes in the Superconducting Gap Structure of
There is strong experimental evidence that the superconductor Sr 2 RuO 4 has a chiral p-
wave order parameter. This symmetry does not require that the associated gap has nodes …
wave order parameter. This symmetry does not require that the associated gap has nodes …
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 …
Sudden reversal in the pressure dependence of Tc in the iron-based superconductor KFe2As2
Proximity to an antiferromagnetic phase suggests that pairing in iron-based superconductors
is mediated by spin fluctuations,,,, but orbital fluctuations have also been invoked. The …
is mediated by spin fluctuations,,,, but orbital fluctuations have also been invoked. The …
Thermodynamic Evidence for the Fulde-Ferrell-Larkin-Ovchinnikov State in the Superconductor
We investigate the magnetic phase diagram near the upper critical field of KFe 2 As 2 by
magnetic torque and specific heat experiments using a high-resolution piezorotary …
magnetic torque and specific heat experiments using a high-resolution piezorotary …
Strong correlations, strong coupling, and -wave superconductivity in hole-doped single crystals
We present a comprehensive study of the low-temperature heat capacity and thermal
expansion of single crystals of the hole-doped Ba 1− x K x Fe 2 As 2 series (0< x< 1) and the …
expansion of single crystals of the hole-doped Ba 1− x K x Fe 2 As 2 series (0< x< 1) and the …
Energy gap evolution across the superconductivity dome in single crystals of (Ba1−xKx)Fe2As2
The mechanism of unconventional superconductivity in iron-based superconductors (IBSs)
is one of the most intriguing questions in current materials research. Among non-oxide …
is one of the most intriguing questions in current materials research. Among non-oxide …
Using electron irradiation to probe iron-based superconductors
High-energy electron irradiation at low temperatures is an efficient and controlled way to
create vacancy–interstitial Frenkel pairs in a crystal lattice, thereby inducing nonmagnetic …
create vacancy–interstitial Frenkel pairs in a crystal lattice, thereby inducing nonmagnetic …