Electronic structure and magnetism of SrFeAsF and Co-doped superconductor SrFe0.875Co0.125AsF
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Published:2010
Issue:6
Volume:59
Page:4245
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ISSN:1000-3290
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Container-title:Acta Physica Sinica
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language:
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Short-container-title:Acta Phys. Sin.
Author:
Liu Su ,Li Bin ,Wang Wei ,Wang Jun ,Liu Mei ,
Abstract
Using the full-potential linearized augmented plane wave method, we studied the electronic structure and magnetic properties of SrFeAsF and Co-doped superconductor SrFe0.875Co0.125AsF. It is found that SrFeAsF exhibits a stripe antiferromagnetic ground state, and in SrFe0.875Co0.125AsF the checkboard antiferromagnetic state become a competitive candidate. The Co-doping drastically suppresses the antiferromagnetic order, increases the density of states near the Femi level and enhances the itineranly of 3d electrons. These results show that the superconductivity is induced by the magnetic fluctuations in SrFe0.875Co0.125AsF.
Publisher
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Subject
General Physics and Astronomy
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