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Ab initio Theory of Magnetic Ordering : Electronic Origin of Pair- and Multi-Spin Interactions / / by Eduardo Mendive Tapia



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Autore: Mendive Tapia Eduardo Visualizza persona
Titolo: Ab initio Theory of Magnetic Ordering : Electronic Origin of Pair- and Multi-Spin Interactions / / by Eduardo Mendive Tapia Visualizza cluster
Pubblicazione: Cham : , : Springer International Publishing : , : Imprint : Springer, , 2020
Edizione: 1st ed. 2020.
Descrizione fisica: 1 online resource (XVIII, 131 p. 35 illus., 34 illus. in color.)
Disciplina: 621.34
Soggetto topico: Magnetism
Magnetic materials
Mathematical physics
Phase transitions (Statistical physics)
Quantum computers
Spintronics
Magnetism, Magnetic Materials
Theoretical, Mathematical and Computational Physics
Phase Transitions and Multiphase Systems
Quantum Information Technology, Spintronics
Nota di contenuto: Introduction -- Ab-initio Theory of Electronic Structure -- Disordered Local Moment Theory and Fast Electronic Responses -- Minimisation of the Gibbs Free Energy: Magnetic Phase Diagrams and Caloric Effects -- Pair- and Four- Spin Interactions in the Heavy Rare Earth Elements -- Frustrated Magnetism in Mn-based Antiperovskite Mn3GaN -- Summary and Outlook -- Appendix.
Sommario/riassunto: Many technological applications exploit a variety of magnetic structures, or magnetic phases, to produce and optimise solid-state functionality. However, most research advances are restricted to a reduced number of phases owing to computational and resource constraints. This thesis presents an ab-initio theory to efficiently describe complex magnetic phases and their temperature-dependent properties. The central assumption is that magnetic phases evolve slowly compared with the underlying electronic structure from which they emerge. By describing how the electronic structure adapts to the type and extent of magnetic order, a theory able to describe multi-spin correlations and their effect on the magnetism at finite temperature is obtained. It is shown that multi-spin correlations are behind the temperature and magnetic field dependence of the diverse magnetism in the heavy rare earth elements. Magnetically frustrated Mn-based materials and the effect of strain are also investigated. These studies demonstrate that the performance of solid-state refrigeration can be enhanced by multi-spin effects.
Titolo autorizzato: Ab initio Theory of Magnetic Ordering  Visualizza cluster
ISBN: 3-030-37238-3
Formato: Materiale a stampa
Livello bibliografico Monografia
Lingua di pubblicazione: Inglese
Record Nr.: 9910373948503321
Lo trovi qui: Univ. Federico II
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Serie: Springer Theses, Recognizing Outstanding Ph.D. Research, . 2190-5053