D. Haug

TL;DR: The spontaneous onset of a one-dimensional, incommensurate modulation of the spin system in the high-transition-temperature superconductor YBa2Cu3O6 suggests that soft spin fluctuations are a microscopic route toward electronic liquid crystals and that nematic order can coexist with high-tem temperature superconductivity in underdoped cuprates.

TL;DR: In this article, a neutron scattering study reveals that the magnetic fluctuations in an iron arsenide superconductor behave according to the conventional theories of metals, unlike the cuprate superconductors, and the magnetic spin-excitation energies are sufficient to mediate the Cooper pairs that form the superconducting state.

TL;DR: In this paper, a photo-induced transient state was observed in which transport perpendicular to the Cu-O planes becomes highly coherent by excitation with mid-infrared optical pulses, tuned to the resonant frequency of apical oxygen vibrations.

TL;DR: It is reported that the electronic structure of Ba1-xKxFe2As2 is in sharp disagreement with band structure calculations, and instead reveals a reconstruction characterized by a (π, π) wavevector.

TL;DR: In this paper, a combined study of the slightly underdoped pnictide superconductor Ba1� xKxFe2As2 by means of x-ray powder diffraction, neutron scattering, muon-spin rotation (� SR), and magnetic force microscopy (MFM) is presented.