Strong correlations from Hund's coupling
Strong electronic correlations are often associated with the proximity of a Mott-insulating
state. In recent years however, it has become increasingly clear that the Hund's rule …
state. In recent years however, it has become increasingly clear that the Hund's rule …
Iron-based superconductors: Magnetism, superconductivity, and electronic structure
AA Kordyuk - Low temperature physics, 2012 - pubs.aip.org
Angle resolved photoemission spectroscopy (ARPES) reveals the features of the electronic
structure of quasi-two-dimensional crystals which are crucial for spin and charge ordering …
structure of quasi-two-dimensional crystals which are crucial for spin and charge ordering …
Discovery of a single-band Mott insulator in a van der Waals flat-band compound
S Gao, S Zhang, C Wang, S Yan, X Han, X Ji, W Tao… - Physical Review X, 2023 - APS
The Mott insulator provides an excellent foundation for exploring a wide range of strongly
correlated physical phenomena, such as high-temperature superconductivity, quantum spin …
correlated physical phenomena, such as high-temperature superconductivity, quantum spin …
Selective Mott physics as a key to iron superconductors
L de'Medici, G Giovannetti, M Capone - Physical review letters, 2014 - APS
We show that electron-and hole-doped BaFe 2 As 2 are strongly influenced by a Mott
insulator that would be realized for half-filled conduction bands. Experiments show that …
insulator that would be realized for half-filled conduction bands. Experiments show that …
Absence of a Holelike Fermi Surface for the Iron-Based Superconductor Revealed by Angle-Resolved Photoemission Spectroscopy
We have performed an angle-resolved photoemission spectroscopy study of the new iron-
based superconductor K 0.8 Fe 1.7 Se 2 (T c∼ 30 K). Clear band dispersion is observed …
based superconductor K 0.8 Fe 1.7 Se 2 (T c∼ 30 K). Clear band dispersion is observed …
Satellites and large doping and temperature dependence of electronic properties in hole-doped BaFe2As2
Superconductivity has recently been discovered in several families of iron-based
compounds, but despite intense research even such basic electronic properties of these …
compounds, but despite intense research even such basic electronic properties of these …
Significant enhancement of upper critical fields by doping and strain in iron-based superconductors
We report measurements up to 85 Tesla of the upper critical fields H c 2 (T) on Ba 1− x K x
As 2 Fe 2 single crystals and FeSe 1− x Te x films tuned by doping and strain. We observed …
As 2 Fe 2 single crystals and FeSe 1− x Te x films tuned by doping and strain. We observed …
Sign-reversal of the in-plane resistivity anisotropy in hole-doped iron pnictides
Unconventional superconductivity usually originates from several strongly coupled degrees
of freedom, such as magnetic, charge and elastic. A highly anisotropic electronic phase, not …
of freedom, such as magnetic, charge and elastic. A highly anisotropic electronic phase, not …
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 …
Using controlled disorder to distinguish and gap structure in Fe-based superconductors
We reconsider the effect of disorder on the properties of a superconductor characterized by
a sign-changing order parameter appropriate for Fe-based materials. Within a simple two …
a sign-changing order parameter appropriate for Fe-based materials. Within a simple two …