Soft X-ray Photoemission Study of New BiS2-Layered Superconductor LaO1−xFxBiS2

Synchrotron x-ray photoemission study of soft x-ray processed ultrathin glycine-water ice films.

Ultrathin glycine-water ice films have been prepared in ultrahigh vacuum by condensation of H(2)O and glycine at 90 K on single crystalline alumina surfaces and processed by soft x-ray (610 eV) exposure for up to 60 min. The physicochemical changes in the films were monitored using synchrotron x-ray photoemission spectroscopy. Two films with different amounts of H(2)O have been considered in or...

Soft x-ray photoemission studies of Hf oxidation

Soft x-ray photoemission spectroscopy has been applied to determine the binding energy shifts and the valance band offset of HfO2 grown on Hf metal. Charging of oxide films upon x-ray exposure is found to be very severe and special care is taken to eliminate it. Photoemission results show the presence of metallic Hf ~from the substrate! with a 4 f 7/2 binding energy of 14.22 eV, fully oxidized ...

Soft X-ray photoemission study of CeRhAs and related compounds: observation of a bulk pseudo-gap

We report bulk 4f and non-4f spectral functions near the Fermi level (EF) of a Kondo semiconductor CeRhAs and its related compound CePdSn by virtue of high-resolution soft X-ray photoemission. The non-4f spectrum of CeRhAs measured at 20K shows a shoulder at the binding energy of 0:18 eV and almost negligible spectral weight at EF: Although a peak similar to a tail of the Kondo resonance is obs...

Soft x-ray absorption and emission spectra and the electronic structure of the Ba2YCu3O7-x superconductor.

Multiband superconductivity in BiS2-based layered compounds.

A mean-field treatment is presented of a square lattice two-orbital-model for [Formula: see text] taking into account intra- and inter-orbital superconductivity. A rich phase diagram involving both types of superconductivity is presented as a function of the ratio between the couplings of electrons in the same and different orbitals ([Formula: see text]) and electron doping x. With the help of ...