MIXED O+N LAYERS ON A RH(110) SURFACE - COMPETITION BETWEEN NITROGEN AND OXYGEN RECONSTRUCTIVE INTERACTIONS

被引:32
作者
MURRAY, PW [1 ]
THORNTON, G [1 ]
BOWKER, M [1 ]
DHANAK, VR [1 ]
BARALDI, A [1 ]
ROSEI, R [1 ]
KISKINOVA, M [1 ]
机构
[1] SINCROTRONE TRIESTE,I-34012 TRIESTE,ITALY
关键词
D O I
10.1103/PhysRevLett.71.4369
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Scanning tunneling microscopy and low energy electron diffraction studies of mixed O+N layers on Rh(110) reveal a competition between (n x 1) N-driven and (1 x 2) O-driven added/missing row reconstructions. At low coverage [001] N-Rh rows prevail, forming islands with a (3 x 1) periodicity. At moderate coverage separate (2 x 1)N and (1 x 2)O islands are formed. At high coverage the growing (1 x 2)O islands displace those of (2 x 1)N. The structural transformations involve a transition from a structure consisting of separate (2 x 1)N and (1 x 2)O islands to a mixed c(2 x 2) N + O layer on a (1 x 2) reconstructed surface.
引用
收藏
页码:4369 / 4372
页数:4
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