Novel mechanism for diffusion of one-dimensional clusters:: Pt/Pt(110)-(1x2)

被引：89

作者：

Linderoth, TR ^{[1
]}

Horch, S

Petersen, L

Helveg, S

Lægsgaard, E

Stensgaard, I

Besenbacher, F

机构：

[1] Aarhus Univ, Inst Phys & Astron, DK-8000 Aarhus C, Denmark

[2] Aarhus Univ, CAMP, DK-8000 Aarhus, Denmark

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.82.1494

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on a novel diffusion mechanism for one-dimensional platinum clusters on the anisotropic Pt(110)-(1 X 2) surface. The mechanism, which is revealed from atom-resolved, time-lapsed scanning tunneling microscopy movies, entails that the end atom of a cluster is promoted up to the next layer, migrates over the cluster, and drops down again, resulting in a cluster- displacement by one lattice spacing. The activation barriers for the atom to ascend and descend the cluster edges are estimated to be 0.91 and 0.70 eV, respectively. The reported observations have already inspired theoretical calculations. [S0031-9007(99)08442-2].

引用

页码：1494 / 1497

页数：4

共 25 条

[1] Scanning tunnelling microscopy studies of metal surfaces [J].

Besenbacher, F .

REPORTS ON PROGRESS IN PHYSICS, 1996, 59 (12) :1737-1802

[2]

Brune H, 1998, SURF SCI REP, V31, P121, DOI 10.1016/S0167-5729(99)80001-6

[3] DISPLACEMENT DISTRIBUTION AND ATOMIC JUMP DIRECTION IN DIFFUSION OF IR ATOMS ON THE IR(001) SURFACE [J].

CHEN, CL ;

TSONG, TT .

PHYSICAL REVIEW LETTERS, 1990, 64 (26) :3147-3150

[4]

FEIBELMAN PJ, COMMUNICATION

[5] Atomic view of the upward movement of step-edge and in-layer atoms of Ir surfaces [J].

Fu, TY ;

Tzeng, YR ;

Tsong, TT .

PHYSICAL REVIEW LETTERS, 1996, 76 (14) :2539-2542

[6] DISLOCATION MECHANISM FOR ISLAND DIFFUSION ON FCC (111) SURFACES [J].

HAMILTON, JC ;

DAW, MS ;

FOILES, SM .

PHYSICAL REVIEW LETTERS, 1995, 74 (14) :2760-2763

[7] DIFFUSION BEHAVIOR OF PT ADATOMS AND CLUSTERS ON THE RH(100) SURFACE [J].

KELLOGG, GL .

APPLIED SURFACE SCIENCE, 1993, 67 (1-4) :134-141

[8] FIELD-ION MICROSCOPE STUDIES OF SINGLE-ATOM SURFACE-DIFFUSION AND CLUSTER NUCLEATION ON METAL-SURFACES [J].

KELLOGG, GL .

SURFACE SCIENCE REPORTS, 1994, 21 (1-2) :1-88

[9] OSCILLATORY BEHAVIOR IN THE SIZE DEPENDENCE OF CLUSTER MOBILITY ON METAL-SURFACES - RH ON RH(100) [J].

KELLOGG, GL .

PHYSICAL REVIEW LETTERS, 1994, 73 (13) :1833-1836

[10] SURFACE-DIFFUSION MODES FOR PT DIMERS AND TRIMERS ON PT(001) [J].

KELLOGG, GL ;

VOTER, AF .

PHYSICAL REVIEW LETTERS, 1991, 67 (05) :622-625

← 1 2 3 →