OBSERVATION OF PREPHASE TRANSITIONAL PHENOMENA ON AN AU(110) SURFACE

被引：39

作者：

VANDERIET, E ^{[1
]}

DERKS, H ^{[1
]}

HEILAND, W ^{[1
]}

机构：

[1] UNIV OSNABRUCK,FACHBEREICH PHYS,W-4500 OSNABRUCK,GERMANY

来源：

SURFACE SCIENCE | 1990年 / 234卷 / 1-2期

关键词：

D O I：

10.1016/0039-6028(90)90664-T

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：

Temperature-dependent polar angular spectra of 4.6 keV neon ions scattered by an Au(110) surface are measured and analyzed by means of a three-particle model with which the scattering cross section is calculated as a function of the angle of incidence. From the analysis, the room temperature surface Debye temperature is extracted. The missing-row model is confirmed. Furthermore, it is shown that the threshold for vacancy formation in the [1̄10] strings lies 120 K below the (1 × 2)-(1 × 1) phase transition temperature (650 K) and that the threshold for the formation of atomic steps on the surface lies around the phase transition temperature. In addition, the order in the [001] direction is found to change drastically around 650 K. © 1990.

引用

页码：53 / 62

页数：10

共 29 条

[1] COMPUTER-SIMULATIONS OF SPUTTERING [J].

BIERSACK, JP .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1987, 27 (01) :21-36

[2] ROUND ROBIN COMPARISON OF LOW-ENERGY ION-SCATTERING BY ESA, TIME-OF-FLIGHT, STRIPPING TECHNIQUE AND COMPUTER-SIMULATION [J].

BUCK, TM ;

WHEATLEY, GH ;

JACKSON, DP ;

BOERS, AL ;

LUITJENS, S ;

VANLOENEN, E ;

ALGRA, AJ ;

ECKSTEIN, W ;

VERBEEK, H .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH, 1982, 194 (1-3) :649-653

[3] THE CRITICAL EXPONENTS OF THE AU(110) (1X2)[--](1X1) PHASE-TRANSITION [J].

CAMPUZANO, JC ;

JENNINGS, G ;

WILLIS, RF .

SURFACE SCIENCE, 1985, 162 (1-3) :484-494

[4] AU(110) (1X2)-TO-(1X1) PHASE-TRANSITION - A PHYSICAL REALIZATION OF THE TWO-DIMENSIONAL ISING-MODEL [J].

CAMPUZANO, JC ;

FOSTER, MS ;

JENNINGS, G ;

WILLIS, RF ;

UNERTL, W .

PHYSICAL REVIEW LETTERS, 1985, 54 (25) :2684-2687

[5] ORDER-DISORDER TRANSITION OF AU(110) AND PT(110) SURFACES - THE SIGNIFICANCE OF RELAXATIONS AND VIBRATIONS [J].

DAW, MS ;

FOILES, SM .

PHYSICAL REVIEW LETTERS, 1987, 59 (24) :2756-2759

[6] THE SHORT-RANGE ORDER SURFACE-STRUCTURE OF AU(110) IN THE RANGE OF THE (1X2) TO (1X1) PHASE-TRANSITION [J].

DERKS, H ;

MOLLER, J ;

HEILAND, W .

SURFACE SCIENCE, 1987, 188 (1-2) :L685-L691

[7] LOW-ENERGY ION-SCATTERING FROM THE AU(110) SURFACE - STRUCTURAL RESULTS [J].

DERKS, H ;

HEMME, H ;

HEILAND, W ;

OVERBURY, SH .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1987, 23 (03) :374-378

[8] OBSERVATION OF SURFACE MELTING [J].

FRENKEN, JWM ;

VANDERVEEN, JF .

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

[9] SELF-DIFFUSION AT A MELTING SURFACE OBSERVED BY HE SCATTERING [J].

FRENKEN, JWM ;

TOENNIES, JP ;

WOLL, C .

PHYSICAL REVIEW LETTERS, 1988, 60 (17) :1727-1730

[10] X-RAY-SCATTERING STUDIES OF THE MELTING OF LEAD SURFACES [J].

FUOSS, PH ;

NORTON, LJ ;

BRENNAN, S .

PHYSICAL REVIEW LETTERS, 1988, 60 (20) :2046-2049

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