Homoepitaxial growth of Pt on Pt(100)-hex: Effects of strongly anisotropic diffusion and finite island sizes

被引：59

作者：

Linderoth, TR ^{[1
]}

Mortensen, JJ ^{[1
]}

Jacobsen, KW ^{[1
]}

Laegsgaard, E ^{[1
]}

Stensgaard, I ^{[1
]}

Besenbacher, F ^{[1
]}

机构：

[1] TECH UNIV DENMARK,DEPT PHYS,CAMP,DK-2800 LYNGBY,DENMARK

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.77.87

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Nucleation and growth of Pt on the reconstructed Pt(100)-hex surface was studied by scanning tunneling microscopy. A detailed autocorrelation analysis of island positions reveals direct evidence for strongly anisotropic diffusion, and from the island size distribution, which obeys a simple scaling relation, we conclude that the mobility of dimers is negligible. Finally, kinetic Monte Carlo simulations, incorporating anisotropy in diffusion and finite island sizes, yield new insight into how these two factors affect the island size distribution and the scaling behavior of island density with temperature and deposition rate.

引用

页码：87 / 90

页数：4

共 16 条

[1] CRITICAL CLUSTER-SIZE - ISLAND MORPHOLOGY AND SIZE DISTRIBUTION IN SUBMONOLAYER EPITAXIAL-GROWTH [J].

AMAR, JG ;

FAMILY, F .

PHYSICAL REVIEW LETTERS, 1995, 74 (11) :2066-2069

[2] EXPERIMENTAL-OBSERVATION OF FAST DIFFUSION OF LARGE ANTIMONY CLUSTERS ON GRAPHITE SURFACES [J].

BARDOTTI, L ;

JENSEN, P ;

HOAREAU, A ;

TREILLEUX, M ;

CABAUD, B .

PHYSICAL REVIEW LETTERS, 1995, 74 (23) :4694-4697

[3] Island-size distributions in submonolayer epitaxial growth: Influence of the mobility of small clusters [J].

Bartelt, MC ;

Gunther, S ;

Kopatzki, E ;

Behm, RJ ;

Evans, JW .

PHYSICAL REVIEW B, 1996, 53 (07) :4099-4104

[4] STM STUDIES OF CLEAN, CO-EXPOSED AND O2-EXPOSED PT(100)-HEX-R0.7-DEGREES [J].

BORG, A ;

HILMEN, AM ;

BERGENE, E .

SURFACE SCIENCE, 1994, 306 (1-2) :10-20

[5] New approach for determination of diffusion parameters of adatoms [J].

Bott, M ;

Hohage, M ;

Morgenstern, M ;

Michely, T ;

Comsa, G .

PHYSICAL REVIEW LETTERS, 1996, 76 (08) :1304-1307

[6] MICROSCOPIC VIEW OF NUCLEATION ON SURFACES [J].

BRUNE, H ;

RODER, H ;

BORAGNO, C ;

KERN, K .

PHYSICAL REVIEW LETTERS, 1994, 73 (14) :1955-1958

[7] TRANSITION FROM ONE-DIMENSIONAL TO 2-DIMENSIONAL GROWTH OF CU ON PD(110) PROMOTED BY CROSS-EXCHANGE MIGRATION [J].

BUCHER, JP ;

HAHN, E ;

FERNANDEZ, P ;

MASSOBRIO, C ;

KERN, K .

EUROPHYSICS LETTERS, 1994, 27 (06) :473-478

[8] NUCLEATION AND GROWTH IN METAL-ON-METAL HOMOEPITAXY - RATE-EQUATIONS, SIMULATIONS AND EXPERIMENTS [J].

EVANS, JW ;

BARTELT, MC .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1994, 12 (04) :1800-1808

[9] RECONSTRUCTION MECHANISM OF FCC TRANSITION-METAL (001) SURFACES [J].

FIORENTINI, V ;

METHFESSEL, M ;

SCHEFFLER, M .

PHYSICAL REVIEW LETTERS, 1993, 71 (07) :1051-1054

[10] ANISOTROPY IN NUCLEATION AND GROWTH OF 2-DIMENSIONAL ISLANDS DURING HOMOEPITAXY ON HEX RECONSTRUCTED AU(100) [J].

GUNTHER, S ;

KOPATZKI, E ;

BARTELT, MC ;

EVANS, JW ;

BEHM, RJ .

PHYSICAL REVIEW LETTERS, 1994, 73 (04) :553-556

← 1 2 →