Ontology highlight
ABSTRACT:
SUBMITTER: Chen HW
PROVIDER: S-EPMC6397168 | biostudies-other | 2019 Mar
REPOSITORIES: biostudies-other
Scientific reports 20190301 1
We combined spectroscopic ellipsometry, Raman scattering spectroscopy, and first-principles calculations to explore the optical properties of YBaCuFeO<sub>5</sub> single crystals. Measuring the optical absorption spectrum of YBaCuFeO<sub>5</sub> at room temperature revealed a direct optical band gap at approximately 1.41 eV and five bands near 1.69, 2.47, 3.16, 4.26, and 5.54 eV. Based on first-principles calculations, the observed optical excitations were appropriately assigned. Analysis of the ...[more]