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Título:
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Fermi surface and electronic structure of Pb/Ge(111)
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Autores:
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Mascaraque Susunaga, Arantzazu ;
Avila, J. ;
Michel, E. G. ;
Asensio, M. C.
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Tipo de documento:
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texto impreso
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Editorial:
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American Physical Society, 1998-06-15
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física de materiales
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Tipo = Artículo
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Resumen:
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The electronic structure of Pb/Ge(111) has been probed along the temperature-induced phase transition ct -root 3X root 3R30 degrees double right arrow 3 X 3 using angle-resolved photoemission. The alpha-root 3X root 3R30 degrees phase is metallic due to the existence of a half-filled, dispersing surface band. The 3 X 3 phase is characterized by the appearance of an additional surface band with 3 X 3 periodicity, whose role in the phase transition is discussed. The Fermi-surface topology of the alpha-root 3X root 3R30 degrees phase has been probed using angle-resolved photoemission. Its shape is undulated, and it resembles strongly the theoretical prediction, with a Fermi momentum of 0.31 Angstrom(-1) along directions and 0.40 Angstrom(-1) along directions. These values were determined from different experimental methods, and agree with the values needed for a perfect 3 X 3 nesting. However, the Fermi surface exhibits no large flat areas suitable for electronic nesting.
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En línea:
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https://eprints.ucm.es/id/eprint/28620/1/Mascaraque%2CA%2050libre.pdf
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