Quantum-size effects in the loss function of Pb(111) thin films: An ab initio study; Physical Review B; Vol. 95, iss. 23

Quantum-size effects in the loss function of Pb(111) thin films: An ab initio study; Physical Review B; Vol. 95, iss. 23

Detalles Bibliográficos
Parent link:Physical Review B: Condensed Matter and Materials Physics.— , 1970-
Vol. 95, iss. 23.— 2017.— [235405, 15 p.]
Autor Corporativo: Национальный исследовательский Томский политехнический университет (ТПУ) Физико-технический институт (ФТИ) Кафедра общей физики (ОФ)
Otros Autores: Zubizarreta X. Xabier, Chulkov E. V. Evgeny Vladimirovich, Chernov I. P. Ivan Petrovich, Vasenko A. S. Andrey Sergeevich, Aldazabal I. Inigo, Silkin V. M. Vyacheslav Mikhaylovich
Sumario:Title screen
A theoretical study of collective electronic excitations in free-standing Pb(111) thin films consisting of 1–5 monolayers (MLs) and a 21-ML film is presented. The calculations are carried out applying the linear response theory, with full inclusion of the electron band structure by means of a first-principles pseudopotential approach in a supercell scheme. In the case of the thickest film, we find that, due to strong bulklike interband transitions, at the Pb(111) surface there are two surface modes. For thin films, a mechanism of transformation of these modes to the symmetric and antisymmetric classic hybrid plasmons is investigated. Pronounced quantum-size effects on plasmon modes of the thinnest films are found. Strong influence of the band structure on dispersion and lifetime of such modes is demonstrated. The present results are in good agreement with available experimental data for a Pb surface and thin films.
Режим доступа: по договору с организацией-держателем ресурса
Lenguaje:inglés
Publicado: 2017
Materias:
электронный ресурс
труды учёных ТПУ
квантово-размерные эффекты
функции потерь
тонкие пленки
неэмпирические методы
Acceso en línea:https://doi.org/10.1103/PhysRevB.95.235405
Formato: Electrónico Capítulo de libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=655511

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