Abstract
We report the structural and superconducting evolution of the solid solution of () 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 dimer exhibits a maximal value of around with increasing Rh content. However, unlike the domed in , the present system exhibits a monotonous decrease in , which is independent of the instability of the Te 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 in the vicinity of the structural instability state of pyrite superconductors.
- Received 9 May 2013
DOI:https://doi.org/10.1103/PhysRevB.87.224504
©2013 American Physical Society