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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2011

Direct observation of the influence of the As-Fe-As angle on the Tc of superconducting SmFeAsO1−x Fx

Résumé

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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hal-00984176 , version 1 (27-04-2014)

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Gaston Garbarino, Ruben Weht, Amadou Sow, André Sulpice, Pierre Toulemonde, et al.. Direct observation of the influence of the As-Fe-As angle on the Tc of superconducting SmFeAsO1−x Fx. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2011, 84, pp.024510. ⟨10.1103/PhysRevB.84.024510⟩. ⟨hal-00984176⟩
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