NEAR-SURFACE BUCKLING IN STRAINED METAL OVERLAYER SYSTEMS

被引：54

作者：

HWANG, RQ

HAMILTON, JC

STEVENS, JL

FOILES, SM

机构：

[1] Sandia National Laboratories, Livermore

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.75.4242

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Scanning tunneling microscopy (STM) images of Ag films grown on Ru(0001) reveal a periodic unit cell with a structural transformation at silver coverages slightly less than one monolayer. Dislocations in the overlayers are similar to the Au(111) herringbone structure; however, Ag/Ru(0001) exhibits two novel differences from previously observed herringbone structures. First, the unit cell dimensions change dramatically as a function of coverage. Second, STM images of Ag/Ru(0001) are inverted relative to those for Au(111). We show that this image inversion is due to substantial relaxations perpendicular to the surface resulting from local strains in the silver overlayer.

引用

收藏

页码：4242 / 4245

页数：4

相关论文

共 17 条

[1] SPONTANEOUS FORMATION OF STRESS DOMAINS ON CRYSTAL-SURFACES [J].

ALERHAND, OL ;

VANDERBILT, D ;

MEADE, RD ;

JOANNOPOULOS, JD .

PHYSICAL REVIEW LETTERS, 1988, 61 (17) :1973-1976

[2] 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

[3] PT(111) RECONSTRUCTION INDUCED BY ENHANCED PT GAS-PHASE CHEMICAL-POTENTIAL [J].

BOTT, M ;

HOHAGE, M ;

MICHELY, T ;

COMSA, G .

PHYSICAL REVIEW LETTERS, 1993, 70 (10) :1489-1492

[4] STRAIN RELIEF AT HEXAGONAL-CLOSE-PACKED INTERFACES [J].

BRUNE, H ;

RODER, H ;

BORAGNO, C ;

KERN, K .

PHYSICAL REVIEW B, 1994, 49 (04) :2997-3000

[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] ORDERED NUCLEATION OF NI AND AU ISLANDS ON AU(111) STUDIED BY SCANNING TUNNELING MICROSCOPY [J].

CHAMBLISS, DD ;

WILSON, RJ ;

CHIANG, S .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1991, 9 (02) :933-937

[7] THE EMBEDDED-ATOM METHOD - A REVIEW OF THEORY AND APPLICATIONS [J].

DAW, MS ;

FOILES, SM ;

BASKES, MI .

MATERIALS SCIENCE REPORTS, 1993, 9 (7-8) :251-310

[8]

FOILES SM, 1992, SURF SCI, V264, pL187

[9]

FRANK FC, 1948, P R SOC LONDON, V198, P205

[10] STRAIN RELAXATION IN HEXAGONALLY CLOSE-PACKED METAL-METAL INTERFACES [J].

GUNTHER, C ;

VRIJMOETH, J ;

HWANG, RQ ;

BEHM, RJ .

PHYSICAL REVIEW LETTERS, 1995, 74 (05) :754-757