FERMI CONTOURS AND ADSORBATE PERIODICITIES - O/MO(011) AND O/W(011)

被引：8

作者：

DHAR, S ^{[1
]}

SMITH, KE ^{[1
]}

KEVAN, SD ^{[1
]}

机构：

[1] UNIV OREGON,DEPT PHYS,EUGENE,OR 97403

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.73.1448

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present experimental Fermi contours for surface-localized states on O/Mo(011) and O/W(011). The contours are consistent with the fact that a (2 x 2) superstructure is observed on Mo(011) but not on W(011) through a global Fermi contour instability in which entire orbits are closely coupled by the wave vector of the superlattice. Our results are also consistent with a recently observed sevenfold reconstruction of the (2 x 2) oxygen structure on Mo(011) through a simple Peierls mechanism. We discuss the generality of such behavior in adsorption systems.

引用

页码：1448 / 1451

页数：4

共 30 条

[1]

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