Quantum impurity models describe an atom or molecule embedded in a host material with
which it can exchange electrons. They are basic to nanoscience as representations of …

Superconductivity in the iron pnictides and chalcogenides arises at the border of
antiferromagnetism, which raises the question of the role of quantum criticality. In this topical …

Superconductivity has recently been discovered in several families of iron-based
compounds, but despite intense research even such basic electronic properties of these …

Theoretically, it is commonly held that in metals near a nematic quantum critical point the
electronic excitations become incoherent on the entire “hot” Fermi surface, triggering non …

We give a summary of recent progress in the field of electronic structure calculations for
materials with strong electronic Coulomb correlations. The discussion focuses on …

Using angle-resolved photoemission spectroscopy, we study the evolution of the number of
carriers in Ba (Fe 1-x Co x) 2 As 2 as a function of Co content and temperature. We show …

We obtain and analyze the phase diagram of doped iron pnictides under the assumption
that doping adds nonmagnetic impurities to the system but does not change the densities of …

We report an investigation with angle-resolved photoemission spectroscopy of the Fermi
surface and electronic band structure of BaCo 2 As 2. Although its quasinesting-free Fermi …

Charge doping of iron-pnictide superconductors leads to collective pinning of flux vortices,
whereas isovalent doping does not. Moreover, flux pinning in the charge-doped compounds …

We use high resolution angle-resolved photoemission to study the electronic structure of the
iron based high-temperature superconductors Ba (Fe 1-x Ru x) 2 As 2 as a function of Ru …