Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1817426 | Physica C: Superconductivity and its Applications | 2015 | 6 Pages |
Abstract
The electronic structure and magnetic properties of EuFe2(As1âxPx)2 were investigated by means the local spin density approximation (LSDA) with the on-site Hubbard Ueff parameter (LSDA+U). The charge and spin densities, densities of states, band structures and Fermi surfaces as a function of the phosphorus percentage in the ferromagnetic tetragonal EuFe2(As1âxPx)2 have been presented and discussed. For all studied concentrations, our alloys keep both the ferromagnetic order and the metallic character. LSDA+U electronic structure calculations show that the tetragonal phase is characterized by the 4f localized electrons of the rare earth element Eu from where originates the magnetism, and by their 3d-Fe electrons responsible for superconductivity. The substitution of As by P leads to a decrease in the volume and to a slight influence of magnetism of the Eu sublattice. LSDA+U calculations reproduce successfully the observed experimental findings. Finally, we provide indications on the coexistence of superconductivity and magnetism for few concentrations.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
F. Drief, A. Zaoui, S. Kacimi, B. Merabet,