Analysis of Chevrel phase compound Pb<SUB>1-x</SUB>Sn<SUB>1.2x</SUB>Mo<SUB>6.35</SUB>S<SUB>8</SUB>

The Chevrel phase HgMo6S8

The crystal structure of HgMo(6)S(8), mercury(II) hexa-molybdenum octa-sulfide, is based on (Mo(6)S(8))S(6) cluster units ( symmetry) inter-connected through inter-unit Mo-S bonds. The Hg(2+) cations occupy large voids between the different cluster units and are covalently bonded to two S atoms. The Hg atoms and one S atom lie on sites with crystallographic and 3 symmetry, respectively. Refinem...

The Chevrel phase In4.07Mo15S11.87Se7.13 with mixed chalcogenide occupancy

The single-crystal of the title compound, indium pentadecamolybdenum nonadeca(sulfide/selenide), was obtained by solid state reaction with an S/Se mixture. It adopts the structure type of In(3)Mo(15)Se(19) and In(3.7)Mo(15)S(19), which are non-substituted Chevrel phases in the space group P6(3)/m. The Mo, one S/Se and two In sites have point symmetry m.. and two S/Se and one In atoms are in 3.....

Phase discrimination of compound gratings: generalized autocorrelation analysis.

The Julesz paradigm involving statistical constraints for the study of texture discrimination is extended to continuous-contrast repetitive patterns by using nth-order autocorrelation functions rather than Julesz's nth-order statistics. Second-order autocorrelations specify the power spectrum of the pattern, and the higher-order autocorrelations specify different levels of phase relationships i...

Enhancement of the critical current density in Chevrel phase superconducting wires

Multiband Superconductivity in the Chevrel Phases

Sub-Kelvin scanning tunneling spectroscopy in the Chevrel phases SnMo6S8 and PbMo6S8 reveals two distinct superconducting gaps with Δ1=3 meV, Δ2∼1.0 meV and Δ1=3.1 meV, Δ2∼1.4 meV, respectively. The gap distribution is strongly anisotropic, with Δ2 predominantly seen when scanning across unit-cell steps on the (001) sample surface. The spectra are well fitted by an anisotropic two-band BCS ...