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Strongly-correlated crystal-field approach to 3d oxides - the orbital magnetism in 3d-ion compounds
Strongly Correlated Electrons · Submitted 29 Apr 2004
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Our studies clearly indicate that it is the highest time to ''unquench'' the orbital moment in solid-state physics in description of 3d-atom containing compounds.
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We have developed the crystal-field approach with strong electron correlations, extended to the Quantum Atomistic Solid-State theory (QUASST), as a physically relevant theoretical model for the description of electronic and magnetic properties of 3d-atom compounds. Its applicability has been illustrated for LaCoO3, FeBr2 and Na2V3O7. According to the QUASST theory in compounds containing open 3d-/4f-/5f-shell atoms the discrete atomic-like low-energy electronic structure survives also when the 3d atom becomes the full part of a solid matter. This low-energy atomic-like electronic structure, being determined by local crystal-field interactions and the intra-atomic spin-orbit coupling, predominantly determines electronic and magnetic properties of the whole compound. We understand our theoretical research as a continuation of the Van Vleck's studies on the localized magnetism. We point out, however, the importance of the orbital magnetism and the intra-atomic spin-orbit coupling for the physically adequate description of real 3d-ion compounds and 3d magnetism. Our studies clearly indicate that it is the highest time to ''unquench'' the orbital moment in solid-state physics in description of 3d-atom containing compounds. PACS No: 75.10.D; 71.70.E Keywords: magnetism, transition-metal compounds, 3d magnetism, crystal field, spin-orbit coupling, orbital magnetism
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We have developed the crystal-field approach with strong electron correlations, extended to the Quantum Atomistic Solid-State theory (QUASST), as a physically relevant theoretical model for the description of electronic and magnetic properties of 3d-atom compounds. | contribution 0.81 | 0.95 | 0.14 | asserted 1.00 |
| s1 | Its applicability has been illustrated for LaCoO3, FeBr2 and Na2V3O7. | contribution 0.64 | 0.74 | 0.03 | asserted 1.00 |
| s2 | According to the QUASST theory in compounds containing open 3d-/4f-/5f-shell atoms the discrete atomic-like low-energy electronic structure survives also when the 3d atom becomes the full part of a solid matter. | result 0.42 | 0.43 | 0.29 | asserted 1.00 |
| s3 | This low-energy atomic-like electronic structure, being determined by local crystal-field interactions and the intra-atomic spin-orbit coupling, predominantly determines electronic and magnetic properties of the whole compound. | interpretation 0.73 | 0.48 | 0.33 | asserted 0.99 |
| s4 | We understand our theoretical research as a continuation of the Van Vleck's studies on the localized magnetism. | background 0.89 | 0.25 | 0.04 | asserted 0.88 |
| s5 | We point out, however, the importance of the orbital magnetism and the intra-atomic spin-orbit coupling for the physically adequate description of real 3d-ion compounds and 3d magnetism. | interpretation 0.75 | 0.31 | 0.32 | asserted 0.89 |
| s6 | Our studies clearly indicate that it is the highest time to ''unquench'' the orbital moment in solid-state physics in description of 3d-atom containing compounds. | interpretation 0.75 | 0.60 | 0.60 | asserted 0.80 |
| s7 | PACS No: 75.10.D; 71.70.E Keywords: magnetism, transition-metal compounds, 3d magnetism, crystal field, spin-orbit coupling, orbital magnetism | background 0.80 | 0.06 | 0.03 | unclear 0.99 |
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Original abstract
We have developed the crystal-field approach with strong electron correlations, extended to the Quantum Atomistic Solid-State theory (QUASST), as a physically relevant theoretical model for the description of electronic and magnetic properties of 3d-atom compounds. Its applicability has been illustrated for LaCoO3, FeBr2 and Na2V3O7. According to the QUASST theory in compounds containing open 3d-/4f-/5f-shell atoms the discrete atomic-like low-energy electronic structure survives also when the 3d atom becomes the full part of a solid matter. This low-energy atomic-like electronic structure, being determined by local crystal-field interactions and the intra-atomic spin-orbit coupling, predominantly determines electronic and magnetic properties of the whole compound. We understand our theoretical research as a continuation of the Van Vleck's studies on the localized magnetism. We point out, however, the importance of the orbital magnetism and the intra-atomic spin-orbit coupling for the physically adequate description of real 3d-ion compounds and 3d magnetism. Our studies clearly indicate that it is the highest time to ''unquench'' the orbital moment in solid-state physics in description of 3d-atom containing compounds. PACS No: 75.10.D; 71.70.E Keywords: magnetism, transition-metal compounds, 3d magnetism, crystal field, spin-orbit coupling, orbital magnetism
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