Article ID Journal Published Year Pages File Type
1516828 Journal of Physics and Chemistry of Solids 2011 5 Pages PDF
Abstract

We report an angle-resolved photoemission spectroscopy study of electronic structures of Eu1−xLaxFe2As2 single crystals, in which the spin density wave transition is suppressed with La doping. In the paramagnetic state, the Fermi surface maps are similar for all dopings, with chemical potential shifts corresponding to the extra electrons introduced by the La doping. In the spin density wave state, we identify electronic structure signatures that relate to the spin density wave transition. Bands around M show that the energy of the system is saved by the band shifts towards high energies, and the shifts decrease with increasing doping, in agreement with the weakened magnetic order.

Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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