Periodic lattice distortion accompanying the charge-density-wave transition for Sn/Ge(111)
- 15 July 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 60 (4) , 2860-2863
- https://doi.org/10.1103/physrevb.60.2860
Abstract
The periodic lattice distortion (PLD) accompanying the charge-density-wave (CDW) transition (at -60 °C) in the α phase of Sn on Ge(111) has been determined by combining the distinct sensitivities of low-energy electron diffraction (LEED) and surface x-ray diffraction (SXRD). New LEED data combined with a SXRD analysis yield a significant lattice distortion. The PLD accompanying the CDW transition is a 0.37-Å vertical rippling of the Sn atoms accompanied by a perpendicular (0.17 Å) and parallel (0.12 Å) distortion of the first-layer Ge atoms, consistent with a band Jahn-Teller-like distortion.
Keywords
This publication has 16 references indexed in Scilit:
- Fermi surface and electronic structure of Pb/Ge(111)Physical Review B, 1998
- First principles calculations of charge and spin density waves of -adsorbates on semiconductorsSurface Science, 1998
- Periodic lattice distortion accompanying the(3×3)charge-density-wave phase of Sn/Ge(111)Physical Review B, 1998
- Surface charge density waves at Sn/Ge(111)?Applied Surface Science, 1998
- Strong Correlation Effects in the () Charge Density Wave Phase of Sn/Ge(111)Physical Review Letters, 1997
- Surface Charge Ordering Transition:Phase of Sn/Ge(111)Physical Review Letters, 1997
- Temperature and momentum dependence of the spectral function of the charge-density wave and of the normal α phase of Pb/Ge(111)Physical Review B, 1997
- Direct observation of a surface charge density waveNature, 1996
- Automated determination of complex surface structures by LEEDSurface Science Reports, 1993
- The tensor LEED approximation and surface crystallography by low-energy electron diffractionProgress in Surface Science, 1992