Periodic lattice distortion accompanying the charge-density-wave transition for Sn/Ge(111)

Authors
Zhang, JD",Ismail,"Rous, PJ Baddorf, AP Plummer, EW
Citation
Pj. Zhang, Jd",ismail,"rous et al., Periodic lattice distortion accompanying the charge-density-wave transition for Sn/Ge(111), PHYS REV B, 60(4), 1999, pp. 2860-2863
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
60
Issue
4
Year of publication
1999
Pages
2860 - 2863
Database
ISI
SICI code
0163-1829(19990715)60:4<2860:PLDATC>2.0.ZU;2-B
Abstract
The periodic lattice distortion (PLD) accompanying the charge-density-wave (CDW) transition (at -60 degrees C) in the a phase of Sn on Ge(lll) has bee n determined by combining the distinct sensitivities of low-energy electron diffraction (LEED) and surface x-ray diffraction (SXRD). New LEED I-V data combined with a SXRD analysis yield a significant lattice distortion. The PLD accompanying the CDW transition is a 0.37-Angstrom vertical rippling of the Sn atoms accompanied by a perpendicular (0.17 Iq) and parallel (0.12 A ngstrom) distortion of the first-layer Ge atoms, consistent with a band Jah n-Teller-like distortion. [S0163-1829(99)01128-5].