DENDRITIC ISLANDS IN METAL-ON-METAL EPITAXY .1. SHAPE TRANSITIONS AND DIFFUSION AT ISLAND EDGES

被引：68
作者：
BARTELT, MC
EVANS, JW
机构：
[1] IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011
[2] IOWA STATE UNIV SCI & TECHNOL,DEPT MATH,AMES,IA 50011
来源：
SURFACE SCIENCE | 1994年 / 314卷 / 01期
关键词：
D O I：
10.1016/0039-6028(94)90203-8
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：
The development of dendritic island shape instabilities observed during metal-on-metal epitaxy is investigated via a lattice-gas model for the low coverage regime. The key assumption is that island structure is controlled by the competition between shape equilibration due to adatom edge diffusion, and Mullins-Sekerka-type shape instability due to diffusion-limited aggregation of adatoms with islands. From comparison with scanning tunneling microscopy data (for the island density and average width of dendritic arms), we advance estimates of the energy barrier for edge diffusion in several systems.
引用
收藏
页码：L829 / L834
页数：6
相关论文
共 29 条
[1]   MORPHOLOGICAL INSTABILITY OF A TERRACE EDGE DURING STEP-FLOW GROWTH [J].
BALES, GS ;
ZANGWILL, A .
PHYSICAL REVIEW B, 1990, 41 (09) :5500-5508
[2]   THE HOMOEPITAXIAL GROWTH OF PT ON PT(111) STUDIED WITH STM [J].
BOTT, M ;
MICHELY, T ;
COMSA, G .
SURFACE SCIENCE, 1992, 272 (1-3) :161-166
[3]   THE GROWTH OF AG FILMS ON NI(100) [J].
BRODDE, A ;
WILHELMI, G ;
BADT, D ;
WENGELNIK, H ;
NEDDERMEYER, H .
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1991, 9 (02) :920-923
[4]   GROWTH-MODEL OF AU FILMS ON RU(001) [J].
CANESSA, E ;
CALMETTA, A .
PHYSICS LETTERS A, 1992, 168 (01) :65-70
[5]   RELAXED DIFFUSION LIMITED AGGREGATION OF AG ON AU(111) OBSERVED BY SCANNING TUNNELING MICROSCOPY [J].
CHAMBLISS, DD ;
WILSON, RJ .
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1991, 9 (02) :928-932
[6]  
EVANS JW, 1994, J VAC SCI TECHNOL A
[7]   DIFFUSION LIMITED AGGREGATION - THE ROLE OF SURFACE-DIFFUSION [J].
GARCIARUIZ, JM ;
OTALORA, F .
PHYSICA A, 1991, 178 (03) :415-420
[8]  
GUNTHER C, 1993, BER BUNSEN PHYS CHEM, V97, P522
[9]  
HENZLER M, 1994, STRUCTURE SURFACES, V4
[10]   SCANNING TUNNELING MICROSCOPY STUDIES ON THE GROWTH AND STRUCTURE OF THIN METALLIC-FILMS ON METAL SUBSTRATES [J].
HWANG, RQ ;
BEHM, RJ .
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1992, 10 (01) :256-261
123