Abstract
The electrical resistivity, crystalline structure, and electronic properties calculated from the experimentally measured atomic positions of the compound SmFeAsOF have been studied up to pressures ∼20 GPa. The correlation between the pressure dependence of the superconducting transition temperature () and crystallographic parameters on the same sample shows clearly that a regular FeAs tetrahedron maximizes through optimization of carrier transfer to the FeAs planes as indicated by the evolution of the electronic band structures.
- Received 10 January 2011
DOI:https://doi.org/10.1103/PhysRevB.84.024510
©2011 American Physical Society