E. Lechner

TL;DR: In this article, scanning tunneling microscopy and spectroscopy measurements on single crystals of FeSe with values of $x=0, $0.04, and 0.09 were presented.

TL;DR: Gurevich et al. as discussed by the authors used scanning tunneling microscopy and x-ray photoelectron spectroscopy (XPS) to investigate the effect of nitrogen doping on the surface electronic and chemical structures of cutout from superconducting radio-frequency cavities.

TL;DR: In this article, a quasihexagonal vortex lattice at low magnetic field undergoes noticeable rhombic distortions above a certain field, where the superconducting coherence length for this band can well exceed the intervortex distance.

TL;DR: In this article, the authors used a theory of oxide decomposition and O diffusion to quantify previously unknown parameters crucial in modeling this process, and showed that this enhancement in RF surface conductivity is primarily associated with interstitial O alloying via dissolution and diffusion of the native oxide.

TL;DR: In this article, single crystals of sulfur-substituted iron selenide, FeSe1−xSx, were grown within eutectics of molten halides under permanent temperature gradient.