Spectroscopic Analysis of Rare-Earth Silicide Structures on the Si(111) Surface
| dc.contributor.author | Sanna, Simone | |
| dc.contributor.author | Plaickner, Julian | |
| dc.contributor.author | Holtgrewe, Kris | |
| dc.contributor.author | Wettig, Vincent M. | |
| dc.contributor.author | Speiser, Eugen | |
| dc.contributor.author | Chandola, Sandhya | |
| dc.contributor.author | Esser, Norbert | |
| dc.date.accessioned | 2021-08-17T08:58:36Z | |
| dc.date.available | 2021-08-17T08:58:36Z | |
| dc.date.issued | 2021-07-23 | |
| dc.date.updated | 2021-08-01T15:55:59Z | |
| dc.description.abstract | Two-dimensional rare-earth silicide layers deposited on silicon substrates have been intensively investigated in the last decade, as they can be exploited both as Ohmic contacts or as photodetectors, depending on the substrate doping. In this study, we characterize rare-earth silicide layers on the Si(111) surface by a spectroscopic analysis. In detail, we combine Raman and reflectance anisotropy spectroscopy (RAS) with first-principles calculations in the framework of the density functional theory. RAS suggests a weakly isotropic surface, and Raman spectroscopy reveals the presence of surface localized phonons. Atomistic calculations allow to assign the detected Raman peaks to phonon modes localized at the silicide layer. The good agreement between the calculations and the measurements provides a strong argument for the employed structural model. | en |
| dc.description.sponsorship | DFG, 194370842, Surface optical spectroscopy of phonon and electron excitations in quasi one-dimensional metallic nanostructures | en |
| dc.description.sponsorship | DFG, 32870154, EXC 172: Centrum für Funktionelle Nanostrukturen (CFN) | en |
| dc.identifier.eissn | 1996-1944 | |
| dc.identifier.uri | https://depositonce.tu-berlin.de/handle/11303/13508 | |
| dc.identifier.uri | http://dx.doi.org/10.14279/depositonce-12291 | |
| dc.language.iso | en | en |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en |
| dc.subject.ddc | 530 Physik | de |
| dc.subject.other | surface science | en |
| dc.subject.other | Si(111) | en |
| dc.subject.other | rare earth silicide | en |
| dc.subject.other | terbium silicide | en |
| dc.subject.other | Raman spectroscopy | en |
| dc.subject.other | RAS | en |
| dc.subject.other | density functional theory | en |
| dc.subject.other | DFT | en |
| dc.subject.other | thin films | en |
| dc.subject.other | 2D materials | en |
| dc.title | Spectroscopic Analysis of Rare-Earth Silicide Structures on the Si(111) Surface | en |
| dc.type | Article | en |
| dc.type.version | publishedVersion | en |
| dcterms.bibliographicCitation.articlenumber | 4104 | en |
| dcterms.bibliographicCitation.doi | 10.3390/ma14154104 | en |
| dcterms.bibliographicCitation.issue | 15 | en |
| dcterms.bibliographicCitation.journaltitle | Materials | en |
| dcterms.bibliographicCitation.originalpublishername | MDPI | en |
| dcterms.bibliographicCitation.originalpublisherplace | Basel | en |
| dcterms.bibliographicCitation.volume | 14 | en |
| tub.accessrights.dnb | free | en |
| tub.affiliation | Fak. 2 Mathematik und Naturwissenschaften::Inst. Festkörperphysik | de |
| tub.affiliation.faculty | Fak. 2 Mathematik und Naturwissenschaften | de |
| tub.affiliation.institute | Inst. Festkörperphysik | de |
| tub.publisher.universityorinstitution | Technische Universität Berlin | en |