Direct observation of the influence of the As-Fe-As angle on the T c of superconducting SmFeAsO1-xFx
The electrical resistivity, crystalline structure, and electronic properties calculated from the experimentally measured atomic positions of the compound SmFeAsO0.81F0.19 have been studied up to pressures ∼20 GPa. The correlation between the pressure dependence of the superconducting transition temp...
| Autores: | , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2011 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/192445 |
| Acceso en línea: | http://hdl.handle.net/11336/192445 |
| Access Level: | acceso abierto |
| Palabra clave: | SUPERCONDUCTIVITY HIGH PRESSURE ELECTRONIC STRUCTURE SYNCHROTRON RADIATION https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| Sumario: | The electrical resistivity, crystalline structure, and electronic properties calculated from the experimentally measured atomic positions of the compound SmFeAsO0.81F0.19 have been studied up to pressures ∼20 GPa. The correlation between the pressure dependence of the superconducting transition temperature (Tc) and crystallographic parameters on the same sample shows clearly that a regular FeAs4 tetrahedron maximizes Tc through optimization of carrier transfer to the FeAs planes as indicated by the evolution of the electronic band structures. |
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