Oxygen induced reconstruction of the Rh(100) surface:: General tendency towards threefold oxygen adsorption site on Rh surfaces

被引:50
作者
Baraldi, A
Cerdá, J
Martín-Gago, JA
Comelli, G
Lizzit, S
Paolucci, G
Rosei, R
机构
[1] Sincrotrone Trieste SCpA, I-34012 Trieste, Italy
[2] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain
[3] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy
[4] INFM, Lab TASC, I-34012 Trieste, Italy
关键词
D O I
10.1103/PhysRevLett.82.4874
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
On the basis of a low energy electron diffraction I-V structural investigation, the surface geometry of the Rh(100) + (2 x 2)-2O phase has been determined. The oxygen is found to adsorb in an unusual threefold site of the rhombi created by the reconstruction of the first rhodium layer, producing a pg symmetry, in agreement with theoretical predictions but at variance with previous experimental conclusions. Our result indicates that there is a strong tendency of oxygen to adsorb in threefold sites on all Rh surfaces. [S0031-9007(99)09340-0].
引用
收藏
页码:4874 / 4877
页数:4
相关论文
共 30 条
[1]   The reconstruction of Rh(001) upon oxygen adsorption [J].
Alfe, D ;
de Gironcoli, S ;
Baroni, S .
SURFACE SCIENCE, 1998, 410 (2-3) :151-157
[2]   SURFACE EXTENDED-X-RAY-ABSORPTION FINE-STRUCTURE STUDY AT THE CARBON K-EDGE - THE P4G(2X2)-C/NI(100) SYSTEM [J].
BADER, M ;
OCAL, C ;
HILLERT, B ;
HAASE, J ;
BRADSHAW, AM .
PHYSICAL REVIEW B, 1987, 35 (11) :5900-5902
[3]   O/Rh(100) p(2x2)->c(2x2) order-disorder phase transition [J].
Baraldi, A ;
Dhanak, VR ;
Comelli, G ;
Prince, KC ;
Rosei, R .
PHYSICAL REVIEW B, 1996, 53 (07) :4073-4077
[4]   CO adsorption and CO oxidation on Rh(100) [J].
Baraldi, A ;
Gregoratti, L ;
Comelli, G ;
Dhanak, VR ;
Kiskinova, M ;
Rosei, R .
APPLIED SURFACE SCIENCE, 1996, 99 (01) :1-8
[5]   Order-disorder phase transitions of oxygen on Rh(100) [J].
Baraldi, A ;
Dhanak, VR ;
Comelli, G ;
Prince, KC ;
Rosei, R .
PHYSICAL REVIEW B, 1997, 56 (16) :10511-10517
[6]   THE RH(110)-P2MG(2X1)-2O SURFACE-STRUCTURE DETERMINED BY AUTOMATED TENSOR LEED - STRUCTURE CHANGES WITH OXYGEN COVERAGE [J].
BATTEAS, JD ;
BARBIERI, A ;
STARKEY, EK ;
VANHOVE, MA ;
SOMORJAI, GA .
SURFACE SCIENCE, 1995, 339 (1-2) :142-150
[7]   STRUCTURE OF GAAS(100)-C(8X2)-GA [J].
CERDA, J ;
PALOMARES, FJ ;
SORIA, F .
PHYSICAL REVIEW LETTERS, 1995, 75 (04) :665-668
[8]  
CERDA J, 1995, THESIS U AUTONOMA MA
[9]   STRUCTURE OF RH(110)(1X2) AND RH(110) (2X2)P2MG-O SURFACES [J].
COMICIOLI, C ;
DHANAK, VR ;
COMELLI, G ;
ASTALDI, C ;
PRINCE, KC ;
ROSEI, R ;
ATREI, A ;
ZANAZZI, E .
CHEMICAL PHYSICS LETTERS, 1993, 214 (05) :438-442
[10]   LOW-ENERGY ELECTRON-DIFFRACTION ANALYSIS OF THE RH(110)-(2X1)-O PHASE [J].
GIERER, M ;
OVER, H ;
ERTL, G ;
WOHLGEMUTH, H ;
SCHWARZ, E ;
CHRISTMANN, K .
SURFACE SCIENCE, 1993, 297 (01) :L73-L78