STM study of carbon-induced reconstructions on W(110): Strong evidence for a surface lattice deformation

被引:74
作者
Bode, M
Pascal, R
Wiesendanger, R
机构
[1] Institute of Applied Physics, Microstructure Research Center, University of Hamburg, D-20355 Hamburg
关键词
carbides; low energy electron diffraction (LEED); scanning tunnelling microscopy; surface relaxation and reconstruction; surface waves; tungsten;
D O I
10.1016/0039-6028(95)00873-X
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
We report on a STM study of clean W(110) and the so-called R(15 x 3) and R(15 x 12) carbon-induced reconstructions of the W(110) surface on the atomic scale. The dimensions of the unit cells of both reconstructions, until now only known from diffraction experiments, are confirmed. Depending on the tunnelling gap resistance the inner structure of the R(15 x 3) unit cell is resolved. The experimental results provide strong evidence, that this structure is formed by a periodic surface lattice deformation.
引用
收藏
页码:185 / 191
页数:7
相关论文
共 10 条
[1]   SCANNING TUNNELING MICROSCOPY OBSERVATIONS ON THE RECONSTRUCTED AU(111) SURFACE - ATOMIC-STRUCTURE, LONG-RANGE SUPERSTRUCTURE, ROTATIONAL DOMAINS, AND SURFACE-DEFECTS [J].
BARTH, JV ;
BRUNE, H ;
ERTL, G ;
BEHM, RJ .
PHYSICAL REVIEW B, 1990, 42 (15) :9307-9318
[2]  
BAUDOING R, 1968, SURF SCI, V10, P392, DOI 10.1016/0039-6028(68)90107-6
[3]   MULTIPLE SCATTERING VERSUS SUPERSTRUCTURES IN LOW ENERGY ELECTRON DIFFRACTION [J].
BAUER, E .
SURFACE SCIENCE, 1967, 7 (03) :351-&
[4]   INTERPRETATION OF LOW-ENERGY ELECTRON DIFFRACTION PATTERNS OF ADSORBED GASES [J].
BAUER, E .
PHYSICAL REVIEW, 1961, 123 (04) :1206-&
[5]   GREEN-FUNCTION THEORY OF SCANNING TUNNELING MICROSCOPY - TUNNEL CURRENT AND CURRENT-DENSITY FOR CLEAN METAL-SURFACES [J].
DOYEN, G ;
DRAKOVA, D ;
SCHEFFLER, M .
PHYSICAL REVIEW B, 1993, 47 (15) :9778-9790
[6]   THE ADSORPTION-KINETICS OF C2H2 AND C2H4 ON W(110) AT 1100-K [J].
MACMILLAN, JG ;
SLAVIN, AJ ;
SUNDERLAND, KJ .
SURFACE SCIENCE, 1986, 173 (01) :138-147
[7]   SURFACE AND BULK CARBURIZATION OF TUNGSTEN SINGLE CRYSTALS [J].
OLLIS, DF ;
BOUDART, M .
SURFACE SCIENCE, 1970, 23 (02) :320-&
[8]   A MODEL FOR CARBURIZED W(100) AND W(110) [J].
RAWLINGS, KJ ;
FOULIAS, SD ;
HOPKINS, BJ .
JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1981, 14 (34) :5411-5416
[9]   TUNGSTEN (110) SURFACE CHARACTERISTICS IN LOW-ENERGY ELECTRON DIFFRACTION [J].
STERN, RM .
APPLIED PHYSICS LETTERS, 1964, 5 (11) :218-&
[10]   ATOMIC AND MOLECULAR DIFFRACTION AND SCATTERING FROM A TUNGSTEN CARBIDE SURFACE CHARACTERIZED BY LEED [J].
WEINBERG, WH ;
MERRILL, RP .
JOURNAL OF CHEMICAL PHYSICS, 1972, 56 (06) :2893-&