@article{10902/18433,
year = {2019},
month = {10},
url = {http://hdl.handle.net/10902/18433},
abstract = {In order to exploit gallium´s (Ga) rich polymorphism in the design of phase-change plasmonic systems, accurate understanding of the dielectric function of the different Ga-phases is crucial. The dielectric dispersion profiles of those phases appearing at atmospheric pressure have been reported in the literature, but there is no information on the dielectric function of the high-pressure Ga-phases. Through first principles calculations we present a comprehensive analysis of the interdependence of the crystal structure, band structure, and dielectric function of two high-pressure Ga phases (Ga(II) and Ga(III)). The plasmonic behavior of these high-pressure Ga-phases is compared to those stable (liquid- and α-Ga) and metastable (β-, γ- and δ-Ga) at atmospherics pressure. This analysis can have important implications in the design of pressure-driven phase-change Ga plasmonic devices and high-pressure SERS substrates.},
organization = {Y.G. and F.M. acknowledges the support by the Army Research Laboratory under Cooperative Agreement Number W911NF-17-2-0023 and by SODERCAN (Sociedad para el Desarrollo de Cantabria) and the Research Vicerrectorate of the University of Cantabria through project 4JU2864661. Y.G. thanks the University of Cantabria for her FPU grant. P.G.-F. and J.J. acknowledge financial support from the Spanish Ministry of Economy and Competitiveness through grant number PGC2018-096955-B-C41.},
publisher = {OSA, Optical Society of America},
publisher = {Opt. Mater. Express 9, 4050-4060 (2019)},
title = {Dielectric function and plasmonic behavior of Ga(II) and Ga(III)},
author = {Gutiérrez Vela, Yael and Losurdo, María and García Fernández, Pablo (físico) and Sainz de la Maza, Marta and González, Francisco and Brown, April S. and Everitt, Henry O. and Junquera Quintana, Francisco Javier and Moreno, Fernando},
}