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- W1844399123 abstract "By using pseudopotential method with local spin density functional approximation, the electronic band structures of Na$_{x}$CoO$_{2}$ are calculated for $x=0.25$, 0.5, 0.75, and $x=1$ in the presence of the structure relaxations. As increasing Na content, the hybridization between cobalt and oxygen orbitals is decreased, and a phase transition is predicted from a wide-band ferromagnetic to a narrow band paramagnetic metals. The itinerant ferromagnetism is strongly suppressed by the local distortions of the oxygens around the cobalts. Moreover, straining the CoO$_{2}$ layers corresponding to the hydrated superconductor Na$_{0.35}$CoO$_{2}cdot $1.3H$%_{2}$O strongly enhances both the hybridization and ferromagnetism." @default.
- W1844399123 created "2016-06-24" @default.
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- W1844399123 date "2003-05-19" @default.
- W1844399123 modified "2023-09-27" @default.
- W1844399123 title "Effects of local oxygen distortions on electronic structures of Na$_{x}$CoO$_{2}$" @default.
- W1844399123 hasPublicationYear "2003" @default.
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