Structure and superconductivity in pyrite Ir0.95−xRhxTe2

Abstract

We report the structural and superconducting evolution of the solid solution of Ir 0.95−x Rh x Te 2 (0 x 0.52) and compare the results with those of analogous selenides. The structural analysis revealed that the unit cell unexpectedly expands and the separation of the Te 2 −2 dimer exhibits a maximal value of around x = 0.2 with increasing Rh content. However, unlike the domed T c in Ir 0.94−x Rh x Te 2 , the present system exhibits a monotonous decrease in T c , which is independent of the instability of the Te 2 −2 dimer. As the analysis of resistivity and heat capacity, it is suggested that electron-electron/phonon correlation strength is a considerable factor leading to the different evolution of T c in the vicinity of the structural instability state of pyrite superconductors.

Exploration of new superconductors and functional materials, and fabrication of superconducting tapes and wires of iron pnictides

“…A similar study has been carried out for the corresponding telluride system of Ir 0.95− x Rh x Te 2 [67]. In this system, the Te–Te distance of the Te-dimer shows a parabolic change taking the maximum between x = 0.2 and 0.3.…”

Electrically tunable conductance and edge modes in topological crystalline insulator thin films: minimal tight-binding model analysis

“…This provides an ideal playground in which to develop various ideas on topological electronics and valleytronics [14,31]. In spite of all the merits, however, silicene has so far been manufactured only on a metallic substrate, such as silver [32,33], whose effect seems to obscure the topological character [34].…”

Nanoscale Superconducting Honeycomb Charge Order in IrTe2

“…These results solidly corroborate the superconductivity origin of the gap. The occurrence of an irregular hexagonal pattern on the 9 surface of doped samples with superconductivity at low temperature can also be understood consistently [27][28][29][30][31] . As mentioned above, the rapid quenching of the sample prohibits the long range ordering of the stripe phase and the enhanced hexagonal domains.…”

“…Upon doping, the stripe charge ordering is suppressed and the superconductivity emerges, suggesting a quantum critical behavior [27][28][29][30][31] . The driving force of the transition into the stripe orders is not fully understood yet but the CDW nature was ruled out [32][33][34] .…”