Artículo
Importance of correlation effects in HCP iron revealed by a pressure-induced electronic topological transition
Glazyrin, K.; Pourovskii, L. V.; Dubrovinsky, L.; Narygina, O.; McCammon, C.; Hewener, B.; Schünemann, V.; Wolny, J.; Muffler, K.; Chumakov, A. I.; Crichton, W.; Hanfland, M.; Prakapenka, V. B.; Tasnádi, F.; Ekholm, M.; Aichhorn, M.; Vildosola, Veronica Laura
; Ruban, A. V.; Katsnelson, M. I.; Abrikosov, I. A.
; Ruban, A. V.; Katsnelson, M. I.; Abrikosov, I. A.
Fecha de publicación:
03/2013
Editorial:
American Physical Society
Revista:
Physical Review Letters
ISSN:
0031-9007
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We discover that hcp phases of Fe and Fe0.9Ni0.1 undergo an electronic topological 27 transition at pressures of about 40 GPa. This topological change of the Fermi surface 28 manifests itself through anomalous behavior of the Debye sound velocity, c/a lattice 29 parameter ratio and Mössbauer center shift observed in our experiments. First-principles 30 simulations within the dynamic mean field approach demonstrate that the transition is 31 induced by many-electron effects. It is absent in one-electron calculations and represents 32 a clear signature of correlation effects in hcp Fe.
Palabras clave:
Ferromagnetic materials
,
Strongly correlated systems
,
Iron alloys
Archivos asociados
Tamaño:
543.7Kb
Formato:
PDF
Licencia
Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción:
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
Colecciones
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Glazyrin, K.; Pourovskii, L. V.; Dubrovinsky, L.; Narygina, O.; McCammon, C.; et al.; Importance of correlation effects in HCP iron revealed by a pressure-induced electronic topological transition; American Physical Society; Physical Review Letters; 110; 11; 3-2013; 1172061-1172065
Compartir
Altmétricas