Browsing Artículos, Comunicaciones, Libros by Author "Zabala Unzalu, Nerea"
Now showing items 1-4 of 4
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Identification of Ni-vacancy defect in Ni-Mn-Z (Z = Ga, Sn, In): An experimental and DFT positron annihilation study
Unzueta Solozabal, Iraultza ; Sánchez Alarcos, Vicente; Recarte Callado, Vicente; Pérez de Landazábal, José Ignacio; Zabala Unzalu, Nerea; García Martínez, José Ángel; Plazaola Muguruza, Fernando (APS, 2019-02-21)[EN] By means of experimental positron-annihilation-lifetime measurements and theoretical density functional theory (DFT) positron-lifetime calculations, vacancy-type defects in Ni50Mn50−xSnx (x=25, 20,15,13,10) and ... -
Observation of a charge delocalization from Se vacancies in Bi2Se3: A positron annihilation study of native defects
Unzueta Solozabal, Iraultza ; Zabala Unzalu, Nerea; Marín Borrás, Vicente; Muñoz Sanjosé, Vicente; García Martínez, José Ángel; Plazaola Muguruza, Fernando (APS, 2016-07-27)[EN] By means of positron annihilation lifetime spectroscopy, we have investigated the native defects present in Bi2Se3, which belongs to the family of topological insulators. We experimentally demonstrate that selenium ... -
Quantum size effects of Pb overlayers at high coverages.
Ayuela Fernández, Andrés; Ogando Arregui, Eduardo; Zabala Unzalu, Nerea (Elsevier, 2007-07-18)We have studied Pb thin films as a function of the thickness up to 60 monolayers (MLs) using ab initio first principles and model calculations. Magic heights corresponding to a modulated oscillatory pattern of the energy ... -
Restored quantum size effects of Pb overlayers at high coverages
Ayuela Fernández, Andrés; Ogando Arregui, Eduardo; Zabala Unzalu, Nerea (APS, 2007-04-10)Abnormally large stability of Pb nanostructures grown on metallic or semiconductor substrates has been observed even for heights of about 30 monolayers. Using both density-functional theory calculations and analytical ...