Diffusion and pair interactions of CO molecules on Pd(111)

被引：42

作者：

Mitsui, T ^{[1
]}

Rose, MK

Fomin, E

Ogletree, DF

Salmeron, M

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.94.036101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The diffusion and interactions of CO molecules on Pd(111) were studied by scanning tunneling microscopy. By following the random walk motion of individual molecules as a function of temperature, an activation energy barrier for diffusion of 118+/-5 meV was determined. The interaction between CO molecules was found to be repulsive for pairs separated by one or two Pd(111) lattice distances, and weakly attractive at a separation of root3.

引用

页码：1 / 4

页数：4

共 20 条

[1] Scanning tunneling microscope with continuous flow cryostat sample cooling [J].

Behler, S ;

Rose, MK ;

Dunphy, JC ;

Ogletree, DF ;

Salmeron, M ;

Chapelier, C .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1997, 68 (06) :2479-2485

[2] SURFACE-DIFFUSION OF HYDROGEN ON SULFUR-COVERED RU(001) SURFACES STUDIED USING LASER-INDUCED THERMAL-DESORPTION [J].

BRAND, JL ;

DECKERT, AA ;

GEORGE, SM .

SURFACE SCIENCE, 1988, 194 (03) :457-474

[3] Microscopic molecular diffusion enhanced by adsorbate interactions [J].

Briner, BG ;

Doering, M ;

Rust, HP ;

Bradshaw, AM .

SCIENCE, 1997, 278 (5336) :257-260

[4] ORIGIN OF OXYGEN-INDUCED LAYER-BY-LAYER GROWTH IN HOMOEPITAXY ON PT(111) [J].

ESCH, S ;

HOHAGE, M ;

MICHELY, T ;

COMSA, G .

PHYSICAL REVIEW LETTERS, 1994, 72 (04) :518-521

[5] The CO/Pt(111) puzzle [J].

Feibelman, PJ ;

Hammer, B ;

Norskov, JK ;

Wagner, F ;

Scheffler, M ;

Stumpf, R ;

Watwe, R ;

Dumesic, J .

JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (18) :4018-4025

[6] Lateral manipulation of adatoms and native substrate atoms with the low-temperature scanning tunneling microscope [J].

Meyer, G ;

Bartels, L ;

Zöphel, S ;

Rieder, KH .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1999, 68 (02) :125-129

[7] Hydrogen adsorption and diffusion on Pd(111) [J].

Mitsui, T ;

Rose, MK ;

Fomin, E ;

Ogletree, DF ;

Salmeron, M .

SURFACE SCIENCE, 2003, 540 (01) :5-11

[8] A STUDY OF A COADSORBATE SURFACE-DIFFUSION (PB ON C-W) [J].

MORIN, R ;

DRECHSLER, M .

SURFACE SCIENCE, 1981, 111 (01) :140-148

[9] SFG spectroscopy from 10-8 to 1000 mbar:: less-ordered CO structures and coadsorption on Pd(111) [J].

Morkel, M ;

Unterhalt, H ;

Salmeron, M ;

Rupprechter, G ;

Freund, HJ .

SURFACE SCIENCE, 2003, 532 :103-107

[10] Diffusion of N adatoms on the Fe(100) surface [J].

Pedersen, MO ;

Österlund, L ;

Mortensen, JJ ;

Mavrikakis, M ;

Hansen, LB ;

Stensgaard, I ;

Lægsgaard, E ;

Norskov, JK ;

Besenbacher, F .

PHYSICAL REVIEW LETTERS, 2000, 84 (21) :4898-4901

← 1 2 →