Atomic and electronic structure of the Yb/Ge(111)-(3x2) surface studied by high-resolution photoelectron spectroscopy
(2007) In Physical Review B (Condensed Matter and Materials Physics) 75(16).- Abstract
- Using high-resolution synchrotron-radiation photoelectron spectroscopy and low-energy electron diffraction, we have studied the electronic and structural properties of the Yb-induced Ge(111)-(3x2) reconstruction with a 1/6 monolayer coverage. We found these properties to be similar in many respects to those of the metal-induced Si(111) and Ge(111) reconstructions described previously in terms of the honeycomb chain-channel (HCC) structure. In particular, the Yb/Ge(111)-(3x2) is revealed to have a semiconducting character, the Yb atoms are divalent, and the surface states observed for the Yb/Ge(111) closely resemble those of the Na/Ge(111)-(3x1) in the literature. The Ge 3d core-level analysis, however, shows that the Ge 3d spectra from... (More)
- Using high-resolution synchrotron-radiation photoelectron spectroscopy and low-energy electron diffraction, we have studied the electronic and structural properties of the Yb-induced Ge(111)-(3x2) reconstruction with a 1/6 monolayer coverage. We found these properties to be similar in many respects to those of the metal-induced Si(111) and Ge(111) reconstructions described previously in terms of the honeycomb chain-channel (HCC) structure. In particular, the Yb/Ge(111)-(3x2) is revealed to have a semiconducting character, the Yb atoms are divalent, and the surface states observed for the Yb/Ge(111) closely resemble those of the Na/Ge(111)-(3x1) in the literature. The Ge 3d core-level analysis, however, shows that the Ge 3d spectra from Yb/Ge(111)-(3x2) drastically differ from corresponding spectra of other Si and Ge HCC reconstructions. An atomic model, based on the general HCC geometry, is proposed for the Yb/Ge(111)-(3x2) surface. In this model, the important structural aspects are a buckling of the Ge = Ge double bond in the top, HCC-reconstructed layer plus a strong rearrangement of the second-layer atoms. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/662929
- author
- Kuzmin, M. ; Schulte, K. ; Laukkanen, P. ; Ahola-Tuomi, M. ; Perala, R. E. ; Adell, Martin LU ; Balasubramanian, T and Vayrynen, I. J.
- organization
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B (Condensed Matter and Materials Physics)
- volume
- 75
- issue
- 16
- publisher
- American Physical Society
- external identifiers
-
- wos:000246075900039
- scopus:34047261119
- ISSN
- 1098-0121
- DOI
- 10.1103/PhysRevB.75.165305
- language
- English
- LU publication?
- yes
- id
- 1b5c4242-bf4d-48b5-a97f-0a538f9ec6a5 (old id 662929)
- date added to LUP
- 2016-04-01 16:21:59
- date last changed
- 2022-01-28 19:12:16
@article{1b5c4242-bf4d-48b5-a97f-0a538f9ec6a5,
abstract = {{Using high-resolution synchrotron-radiation photoelectron spectroscopy and low-energy electron diffraction, we have studied the electronic and structural properties of the Yb-induced Ge(111)-(3x2) reconstruction with a 1/6 monolayer coverage. We found these properties to be similar in many respects to those of the metal-induced Si(111) and Ge(111) reconstructions described previously in terms of the honeycomb chain-channel (HCC) structure. In particular, the Yb/Ge(111)-(3x2) is revealed to have a semiconducting character, the Yb atoms are divalent, and the surface states observed for the Yb/Ge(111) closely resemble those of the Na/Ge(111)-(3x1) in the literature. The Ge 3d core-level analysis, however, shows that the Ge 3d spectra from Yb/Ge(111)-(3x2) drastically differ from corresponding spectra of other Si and Ge HCC reconstructions. An atomic model, based on the general HCC geometry, is proposed for the Yb/Ge(111)-(3x2) surface. In this model, the important structural aspects are a buckling of the Ge = Ge double bond in the top, HCC-reconstructed layer plus a strong rearrangement of the second-layer atoms.}},
author = {{Kuzmin, M. and Schulte, K. and Laukkanen, P. and Ahola-Tuomi, M. and Perala, R. E. and Adell, Martin and Balasubramanian, T and Vayrynen, I. J.}},
issn = {{1098-0121}},
language = {{eng}},
number = {{16}},
publisher = {{American Physical Society}},
series = {{Physical Review B (Condensed Matter and Materials Physics)}},
title = {{Atomic and electronic structure of the Yb/Ge(111)-(3x2) surface studied by high-resolution photoelectron spectroscopy}},
url = {{http://dx.doi.org/10.1103/PhysRevB.75.165305}},
doi = {{10.1103/PhysRevB.75.165305}},
volume = {{75}},
year = {{2007}},
}