THE (2X2) P2MG TO (1X2) O/RH(110) PHASE-TRANSITION

被引：21
|
作者：
BELLMAN, AF
CVETKO, D
MORGANTE, A
POLLI, M
TOMMASINI, F
PRINCE, KC
ROSEI, R
机构：
[1] SINCROTRONE TRIESTE SCPA,I-34012 TRIESTE,ITALY
[2] UNIV TRIESTE,I-34000 TRIESTE,ITALY
[3] UNIV TRENT,I-38050 TRENT,ITALY
[4] INST J STEFAN,LJUBLJANA,SLOVENIA
来源：
SURFACE SCIENCE | 1993年 / 281卷 / 1-2期
关键词：
D O I：
10.1016/0039-6028(93)90847-D
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Adsorption of half a monolayer of oxygen on the Rh(110) substrate gives a surface with a (2 x 2) p2mg symmetry structure, in which the substrate has a missing row (1 x 2) structure. He-beam scattering measurements show that close to 750 K this surface structure reversibly transforms into a phase of (1 x 2) symmetry. The phase transition has been classified as belonging to the order-disorder type, and falls into the 2D Ising universality class. Above the transition temperature proliferation of antiphase domain boundaries along the [001] direction is observed and discussed.
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页码：L321 / L325
页数：5
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