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- W2796596378 abstract "One of the unifying concepts in the iron-pnictide superconductors, both for the mechanism of magnetic ordering and of unconventional order parameter character, has been the electron and hole Fermi surfaces that are approximately nested. Using the density functional methods that have predicted Fermi surfaces correctly in SrFe$_2$P$_2$, we find that the recently reported superconducting Sr$_2$VO$_3$FeAs, with $T_c$=37 K and no apparent competition between magnetism and superconductivity, possesses different Fermi surface geometry and character than previous classes of iron pnictides. The intervening layer (a V bilayer) gives rise to bands that cross the Fermi level. Coupling to the FeAs layer is small except for interaction along the zone boundary, however that coupling degrades the Fermi surface nesting. Sr$_2$VO$_3$FeAs, with its alternating layers of open shell atoms, deserves further close study that should help to understand the origin of the properties of iron pnictide compounds." @default.
- W2796596378 created "2018-04-24" @default.
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- W2796596378 date "2009-08-19" @default.
- W2796596378 modified "2023-09-27" @default.
- W2796596378 title "Sr$_2$VO$_3$FeAs: A New Paradigm for Fe-Pnictide Superconductors" @default.
- W2796596378 hasPublicationYear "2009" @default.
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