NOVEL MECHANISM FOR THE FORMATION OF CHEMISORPTION PHASES - THE (2X1)O-CU(110 ADDED-ROW RECONSTRUCTION

被引:456
作者
COULMAN, DJ [1 ]
WINTTERLIN, J [1 ]
BEHM, RJ [1 ]
ERTL, G [1 ]
机构
[1] MAX PLANCK GESELL,FRITZ HABER INST,W-1000 BERLIN 33,GERMANY
关键词
D O I
10.1103/PhysRevLett.64.1761
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Scanning tunneling microscopy investigations on nucleation and growth of the (2×1)O-Cu(110) structure revealed that the new phase is formed by condensation of mobile chemisorbed O atoms with Cu adatoms evaporating from steps and diffusing across the terraces of the substrate surface. This process can be regarded as two-dimensional precipitation from a dilute mixed fluid into a solid phase rather than a solid-solid transformation. The resulting structure is more appropriately described to be of added-row rather than of missing-row type. © 1990 The American Physical Society.
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页码:1761 / 1764
页数:4
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