Details
| Original language | English |
|---|---|
| Article number | 195427 |
| Journal | Physical Review B |
| Volume | 98 |
| Issue number | 19 |
| Publication status | Published - 19 Nov 2018 |
Abstract
We present here a combined experimental Raman spectroscopy and ab initio theoretical study of the vibrational modes of the (3×3) reconstructed SIC phase of Pb on Si(111) and discuss their relation to the atomic surface structure. The Raman response of the surface localized vibrational modes, in particular, is identified in the low-frequency spectral range (down to 15cm-1). We demonstrate that Raman spectroscopy is a very powerful approach to test atomic structures of surfaces and a valuable complement to standard surface analytics. While the calculated spectra of H3 and T4 are too similar to allow a discrimination of these phases, the good overall agreement to the measured Raman spectra enables a classification of the observed vibrational modes.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physical Review B, Vol. 98, No. 19, 195427, 19.11.2018.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Surface vibrations in the T4 and H3 Pb phases on Si(111)
AU - Speiser, Eugen
AU - Baumann, Arne
AU - Chandola, Sandhya
AU - Esser, Norbert
AU - Zahedifar, Maedeh
AU - Kratzer, Peter
AU - Tegenkamp, Christoph
N1 - © 2018 American Physical Society
PY - 2018/11/19
Y1 - 2018/11/19
N2 - We present here a combined experimental Raman spectroscopy and ab initio theoretical study of the vibrational modes of the (3×3) reconstructed SIC phase of Pb on Si(111) and discuss their relation to the atomic surface structure. The Raman response of the surface localized vibrational modes, in particular, is identified in the low-frequency spectral range (down to 15cm-1). We demonstrate that Raman spectroscopy is a very powerful approach to test atomic structures of surfaces and a valuable complement to standard surface analytics. While the calculated spectra of H3 and T4 are too similar to allow a discrimination of these phases, the good overall agreement to the measured Raman spectra enables a classification of the observed vibrational modes.
AB - We present here a combined experimental Raman spectroscopy and ab initio theoretical study of the vibrational modes of the (3×3) reconstructed SIC phase of Pb on Si(111) and discuss their relation to the atomic surface structure. The Raman response of the surface localized vibrational modes, in particular, is identified in the low-frequency spectral range (down to 15cm-1). We demonstrate that Raman spectroscopy is a very powerful approach to test atomic structures of surfaces and a valuable complement to standard surface analytics. While the calculated spectra of H3 and T4 are too similar to allow a discrimination of these phases, the good overall agreement to the measured Raman spectra enables a classification of the observed vibrational modes.
UR - http://www.scopus.com/inward/record.url?scp=85057149339&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.98.195427
DO - 10.1103/PhysRevB.98.195427
M3 - Article
AN - SCOPUS:85057149339
VL - 98
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
IS - 19
M1 - 195427
ER -