Premium
Raman Spectroscopy on Surface Phonons of Si( hhk ) Surfaces Modified by Au Submonolayers
Author(s) -
Speiser Eugen,
Plaickner Julian,
Chandola Sandhya,
Esser Norbert,
Halbig Benedikt,
Geurts Jean
Publication year - 2019
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201800341
Subject(s) - raman spectroscopy , vicinal , monolayer , materials science , phonon , silicon , substrate (aquarium) , semiconductor , spectroscopy , molecular vibration , analytical chemistry (journal) , molecular physics , chemistry , condensed matter physics , optics , optoelectronics , nanotechnology , physics , oceanography , organic chemistry , quantum mechanics , chromatography , geology
Raman spectroscopy has evolved to a sensitive tool for analyzing vibration modes of ordered (sub)monolayers of metal adatoms on semiconductor surfaces, which are typical systems for electron correlation effects. We report on the in situ UHV Raman analysis of self‐organized Au submonolayers on nominal Si(111) surfaces, as well as on vicinal Si(553), Si(775), and Si(557). For the two‐dimensional Au‐ ( 3 × 3 )and the one‐dimensional Au‐(5 × 2) reconstruction several specific Raman peaks in the spectral range below 200 cm −1 are assigned to Au‐dominated vibration modes, while Si‐step‐edge vibration modes around 400 cm −1 are fingerprints of the substrate orientation.