{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Jadczak J"],"funding":["Deutsche Forschungsgemeinschaft","Narodowe Centrum Nauki"],"pagination":["3986-3994"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC10165653"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["14(17)"],"pubmed_abstract":["Germanium monosulfide with an anisotropic puckered crystalline structure has recently attracted much attention due to its unique optical and electronic properties; however, exciton-phonon interactions were only superficially elucidated. We study the resonant Raman scattering and the photoluminescence of the optically active Γ-exciton in layered GeS flakes and evaluate the exciton and phonon responses on variations in the excitation energy, laser-light and emission polarizations, temperature, and laser power. A double-resonance mechanism allows for observing Raman forbidden (dark) first- and second-order longitudinal-optical phonon modes whose symmetries and energies are moreover calculated by density functional perturbation theory. For (quasi)-resonant exciton excitation, the selection rul"],"journal":["The journal of physical chemistry letters"],"pubmed_title":["Resonant Exciton Scattering Reveals Raman Forbidden Phonon Modes in Layered GeS."],"pmcid":["PMC10165653"],"funding_grant_id":["2020/37/B/ST3/00539","TRR 160 - B4, 249492093"],"pubmed_authors":["Bryja L","Debus J","Jadczak J","Andrzejewski J","Ho CH"],"additional_accession":[]},"is_claimable":false,"name":"Resonant Exciton Scattering Reveals Raman Forbidden Phonon Modes in Layered GeS.","description":"Germanium monosulfide with an anisotropic puckered crystalline structure has recently attracted much attention due to its unique optical and electronic properties; however, exciton-phonon interactions were only superficially elucidated. We study the resonant Raman scattering and the photoluminescence of the optically active Γ-exciton in layered GeS flakes and evaluate the exciton and phonon responses on variations in the excitation energy, laser-light and emission polarizations, temperature, and laser power. A double-resonance mechanism allows for observing Raman forbidden (dark) first- and second-order longitudinal-optical phonon modes whose symmetries and energies are moreover calculated by density functional perturbation theory. For (quasi)-resonant exciton excitation, the selection rul","dates":{"release":"2023-01-01T00:00:00Z","publication":"2023 May","modification":"2025-04-04T10:19:51.386Z","creation":"2025-02-19T00:12:25.158Z"},"accession":"S-EPMC10165653","cross_references":{"pubmed":["37083310"],"doi":["10.1021/acs.jpclett.3c00783"]}}