LONG-RANGE INHIBITION OF THE W[001] CLEAN SURFACE DISPLACIVE PHASE BY NITROGEN

被引：18

作者：

GRIFFITHS, K

KING, DA

机构：

[1] Donnan Laboratories, The University, Liverpool

来源：

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS | 1979年 / 12卷 / 19期

关键词：

D O I：

10.1088/0022-3719/12/19/003

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Half-order LEED beam intensities and half-widths produced by the low-temperature ( square root 2* square root 2)R45 degrees displacive phase on W(001) have been determined as a function of nitrogen adatom coverage. The clean surface structure is found to be strongly inhibited by very low coverages (1-2*1013 atoms/cm2, or 1-2% of a monolayer), and the radius of influence of a N adatom pair is estimated as 20 AA. The results provide evidence for the influence of long-range effects, such as charge-density waves or surface-state coupling, on the formation of the ordered displacive phase.

引用

收藏

页码：L755 / L759

页数：5

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