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- W2533529415 abstract "To study the microscopic electronic and magnetic interactions in the substoichiometric iron chalcogenide FeSe$_{1-x}$ which is observed to superconduct at x~1/8 up to T_c=27 K, we use first principles methods to study the Se vacancy in this system. The vacancy forms an immobile strong magnetic polaron in nearly magnetic FeSe, which for the ordered x=1/8 alloy leads to half metallic conduction. Similar magnetic clusters are obtained for FeTe$_{1-x}$ and for BaFe$_2$As$_2$ with an As vacancy, but both are not half metallic. Based on fixed spin density results, we suggest the low energy excitations in FeSe$_{1-x}$ are antiparamagnon-like with short correlation length." @default.
- W2533529415 created "2016-10-28" @default.
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- W2533529415 date "2008-08-12" @default.
- W2533529415 modified "2023-09-27" @default.
- W2533529415 title "Anion Vacancy Driven Magnetism in Superconducting $alpha$--FeSe$_{1-x}$" @default.
- W2533529415 hasPublicationYear "2008" @default.
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