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NiO - from first principles | | R. J. Radwanski
; Z. Ropka
; | | Date: |
23 Jun 2006 | | Subject: | Strongly Correlated Electrons | | Abstract: | We have calculated from first-principles the octupolar interactions of the Ni2+ ion in NiO, which gives the theoretical basis for the ionic description of properties of NiO with fully localized strongly-correlated eight d electrons. A failure of the up-now first principles ionic calculations for NiO was largely due to too small values taken for the octupolar moment of the transition-metal atom, largely generated by too small value for <r_d^4>. Our many-electron crystal-field based approach enables successful calculations of the electronic structure and magnetic properties both in the paramagnetic and in magnetically-ordered state as well as zero-temperature properties and thermodynamics. | | Source: | arXiv, cond-mat/0606604 | | Services: | Forum | Review | PDF | Favorites | |
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