TEMPERATURE-DEPENDENT SIGN REVERSAL OF THE SURFACE CONTRACTION OF AG(111)

被引：77

作者：

STATIRIS, P ^{[1
]}

LU, HC ^{[1
]}

GUSTAFSSON, T ^{[1
]}

机构：

[1] RUTGERS STATE UNIV,SURFACE MODIFICAT LAB,PISCATAWAY,NJ 08855

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.72.3574

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied the structure of the Ag(111) surface as a function of temperature using medium energy ion scattering. We find that the first interlayer spacing is contracted at temperatures below 670 K, but increases at higher temperatures in a nonlinear fashion and is expanded some 10% 80 K below the melting point. As the surface vibration amplitudes increase significantly at the same time, we attribute this sign reversal to enhanced anharmonic effects at the surface.

引用

页码：3574 / 3577

页数：4

共 27 条

[1] CALCULATION OF DYNAMICAL SURFACE PROPERTIES OF NOBLE-GAS CRYSTALS .I. QUASIHARMONIC APPROXIMATION [J].

ALLEN, RE ;

DEWETTE, FW .

PHYSICAL REVIEW, 1969, 179 (03) :873-&

[2] ENHANCED SURFACE ANHARMONICITY OBSERVED IN VIBRATIONS ON CU(110) [J].

BADDORF, AP ;

PLUMMER, EW .

PHYSICAL REVIEW LETTERS, 1991, 66 (21) :2770-2773

[3] 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

[4] APPROACH TO THERMAL ROUGHENING OF NI(110) - A STUDY BY HIGH-RESOLUTION LOW-ENERGY ELECTRON-DIFFRACTION [J].

CAO, YJ ;

CONRAD, EH .

PHYSICAL REVIEW LETTERS, 1990, 64 (04) :447-450

[5] 1ST-PRINCIPLES PHONON AND MULTIPLE-SCATTERING ELECTRON-ENERGY-LOSS-SPECTRA STUDIES OF CU(111) AND AG(111) [J].

CHEN, Y ;

TONG, SY ;

BOHNEN, KP ;

RODACH, T ;

HO, KM .

PHYSICAL REVIEW LETTERS, 1993, 70 (05) :603-606

[6] THERMAL DIFFUSE SCATTERING OF LOW-ENERGY ELECTRONS AT LOW-TEMPERATURE [J].

DENNIS, RL ;

WEBB, MB .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY, 1973, 10 (01) :192-195

[7] THERMAL-EXPANSION AT A CRYSTAL SURFACE [J].

DOBRZYNSKI, L ;

MARADUDIN, AA .

PHYSICAL REVIEW B, 1973, 7 (04) :1207-1223

[8] THEORY AND SIMULATION OF HIGH-ENERGY ION-SCATTERING EXPERIMENTS FOR STRUCTURE-ANALYSIS OF SURFACES AND INTERFACES [J].

FRENKEN, JWM ;

TROMP, RM ;

VANDERVEEN, JF .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1986, 17 (04) :334-343

[9] OBSERVATION OF SURFACE MELTING [J].

FRENKEN, JWM ;

VANDERVEEN, JF .

PHYSICAL REVIEW LETTERS, 1985, 54 (02) :134-137

[10] EVIDENCE FOR ANOMALOUS THERMAL-EXPANSION AT A CRYSTAL-SURFACE [J].

FRENKEN, JWM ;

HUUSSEN, F ;

VANDERVEEN, JF .

PHYSICAL REVIEW LETTERS, 1987, 58 (04) :401-404

← 1 2 3 →