Density-functional approach to spin-density waves
| Autor: | L. N. Oliveira, K. Capelle |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Physics
Orbital-free density functional theory Runge–Gross theorem General Physics and Astronomy Functional approach Model system Quantum mechanics Physics::Atomic and Molecular Clusters Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Statistical physics Local-density approximation Spin density Particle density |
| Zdroj: | Europhysics Letters (EPL). 49:376-382 |
| ISSN: | 1286-4854 0295-5075 |
| DOI: | 10.1209/epl/i2000-00159-8 |
| Popis: | We propose a novel density-functional approach to antiferromagnetism and spin-density waves. Nonlocal antiferromagnetic correlations and possible noncollinear spin configurations are incorporated via a staggered density, which enters the formalism on the same footing as the particle density. We establish the pertinent generalization of the Hohenberg-Kohn theorem, derive the associated Kohn-Sham equations, outline the construction of approximations for the corresponding exchange and correlation functional, discuss the relation of the present method to other density-functional approaches, and report a first application to a simple model system. |
| Databáze: | OpenAIRE |
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