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

被引：45

作者：

Zhang, JD

Ismail

Rous, PJ

Baddorf, AP

Plummer, EW

机构：

[1] Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA

[2] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[3] Univ Maryland, Dept Phys, Baltimore, MD 21228 USA

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.60.2860

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 been 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 Angstrom) distortion of the first-layer Ge atoms, consistent with a band Jahn-Teller-like distortion. [S0163-1829(99)01128-5].

引用

页码：2860 / 2863

页数：4

共 20 条

[11] Surface charge density waves at Sn/Ge(111)? [J].