Ab-initio calculations and ellipsometry measurements of the optical properties of the layered semiconductor In4Se3

Authors
Makinistian, Leonardo; Albanesi, Eduardo Aldo; Gonzalez Lemus, Nasly Vanessa; Petukhov, A. G.; Schmidt, D.; Schubert, E.; Schubert, M.; Losovyj, Ya; Galiy, P.; Dowben, P.
Publication Year
2010
Language
English
Format
article
Status
Published version
Description
In this work, we present a thorough study of the optical properties of the layered orthorhombic compoundIn4Se3. The dielectric function—real and imaginary parts, the complex refraction index, the reflectivity, theabsorption coefficient, and the conductivity of In4Se3 were calculated with the inclusion of the spin-orbitinteraction, using an ab initio FP-LAPW method based on DFT. Also, generalized ellipsometry was employedfor more precise measurement of the anisotropic dielectric functions for polarization along crystal a, b, and caxes of orthorhombic absorbing In4Se3 single crystals cut approximately parallel to (100) at photon energiesfrom 0.76 to 3.1 eV. Our experimental results show a good agreement with our calculations. We discuss thelocation and nature of the main optical peaks appearing in the spectra. The obtained optical functions displaya rather anisotropic behavior, mainly in the infrared-visible region. Our results seem to be predictive to a highextension, given the scarce experimental information about its optical properties.
Fil: Makinistian, Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química (i); Argentina. Universidad Nacional de Entre Rios; Argentina
Fil: Albanesi, Eduardo Aldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química (i); Argentina. Universidad Nacional de Entre Rios; Argentina
Fil: Gonzalez Lemus, Nasly Vanessa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química (i); Argentina. Universidad Nacional de Entre Rios; Argentina
Fil: Petukhov, A. G.. South Dakota School of Mines; Estados Unidos
Fil: Schmidt, D.. University Of Nebraska; Estados Unidos
Fil: Schubert, E.. University Of Nebraska; Estados Unidos
Fil: Schubert, M.. University Of Nebraska; Estados Unidos
Fil: Losovyj, Ya. Louisiana State University; Estados Unidos
Fil: Galiy, P.. Ivan Franko National University of Lviv; Ucrania
Fil: Dowben, P.. University Of Nebraska; Estados Unidos
Subject
71.20.b
78.20.Ci
71.15.Mb
Física de los Materiales Condensados
Ciencias Físicas
CIENCIAS NATURALES Y EXACTAS
Access level
Restricted access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/13320