Artículo
Orbital symmetry reconstruction and strong mass renormalization in the two-dimensional electron gas at the surface of KTaO 3
Santander Syro, A. F.; Bareille, C.; Fortuna, F.; Copie, O.; Gabay, M.; Bertran, F.; Taleb Ibrahimi, A.; Le Fèvre, P.; Herranz, G.; Reyren, N.; Bibes, M.; Barthélémy, A.; Lecoeur, P.; Guevara, Alejandro Javier
; Rozenberg, Marcelo Javier
; Rozenberg, Marcelo Javier
Fecha de publicación:
09/2012
Editorial:
American Physical Society
Revista:
Physical Review B: Condensed Matter and Materials Physics
ISSN:
1098-0121
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We study, using angle-resolved photoemission spectroscopy, the two-dimensional electron gas (2DEG) at the surface of KTaO3 (KTO), a wide-gap insulator with strong spin-orbit coupling (SOC). We find that this 2DEG is a genuinely different physical state with respect to the bulk: the orbital symmetries of its subbands are entirely reconstructed and their masses are renormalized. This occurs because the values of the SOC, the Fermi energy, and the subband splittings become comparable in the 2DEG. Additionally, we identify an F-center-like heavy band resulting from the polar nature of the KTO surface.
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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(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Santander Syro, A. F.; Bareille, C.; Fortuna, F.; Copie, O.; Gabay, M.; et al.; Orbital symmetry reconstruction and strong mass renormalization in the two-dimensional electron gas at the surface of KTaO 3; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 86; 12; 9-2012; 1-6
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