Bromide adsorption on Ag(001): A potential induced two-dimensional Ising order-disorder transition

被引：90

作者：

Ocko, BM

Wang, JX

Wandlowski, T

机构：

[1] BROOKHAVEN NATL LAB,DEPT APPL SCI,UPTON,NY 11973

[2] UNIV ULM,DEPT ELECTROCHEM,D-89069 ULM,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.79.1511

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The adsorption of bromide on an Ag(001) electrode has been investigated using in situ x-ray scattering methods. With increasing potential, the bromide undergoes a second order phase transition from a lattice gas to an ordered c(2 x 2) structure. The order parameter is consistent with the 2D Ising model prediction beta = 1/8. A comparison of x-ray and electrochemical measurements indicates significant lateral disorder at low coverages which decreases with increasing coverage.

引用

收藏

页码：1511 / 1514

页数：4

相关论文

共 24 条

[1] PHASE-TRANSITIONS AT LIQUID SOLID INTERFACES - PADE APPROXIMANT FOR ADSORPTION-ISOTHERMS AND VOLTAMMOGRAMS [J].

BLUM, L ;

HUCKABY, DA .

JOURNAL OF CHEMICAL PHYSICS, 1991, 94 (10) :6887-6894

[2]

Collins M. F., 1989, MAGNETIC CRITICAL SC

[3] INDIRECT INTERACTION BETWEEN ADATOMS ON A TIGHT-BINDING SOLID [J].

EINSTEIN, TL ;

SCHRIEFFER, JR .

PHYSICAL REVIEW B, 1973, 7 (08) :3629-3648

[4] CRYSTAL-FACE EFFECTS ON ADSORPTION OF IONIC AND NONIONIC SPECIES ON AG ELECTRODES - AN ELECTROCHEMICAL AND STM STUDY [J].

FORESTI, ML ;

ALOISI, G ;

INNOCENTI, M ;

KOBAYASHI, H ;

GUIDELLI, R .

SURFACE SCIENCE, 1995, 335 (1-3) :241-251

[5] ADSORPTION-DESORPTION PROPERTIES AND SURFACE STRUCTURAL CHEMISTRY OF BROMINE ON CLEAN AND SODIUM-DOSED AG(111) [J].

GODDARD, PJ ;

SCHWAHA, K ;

LAMBERT, RM .

SURFACE SCIENCE, 1978, 71 (02) :351-363

[6] TEMPERATURE-DEPENDENCE OF THE PHASE-DIAGRAM OF C1/AG(100) [J].

HWANG, RQ ;

WILLIAMS, ED ;

BARTELT, NC ;

PARK, RL .

PHYSICAL REVIEW B, 1988, 37 (10) :5870-5873

[7] EXTENT OF EXPONENT VARIATION IN A HARD-SQUARE LATTICE GAS WITH 2ND-NEIGHBOR REPULSION [J].

KINZEL, W ;

SCHICK, M .

PHYSICAL REVIEW B, 1981, 24 (01) :324-328

[8] X-RAY-DIFFRACTION STUDIES OF ORDERED CHLORIDE AND BROMIDE MONOLAYERS AT THE AU(111)-SOLUTION INTERFACE [J].

MAGNUSSEN, OM ;

OCKO, BM ;

ADZIC, RR ;

WANG, JX .

PHYSICAL REVIEW B, 1995, 51 (08) :5510-5513

[9] COVERAGE-DEPENDENT ADSORPTION SITES FOR K/CU(001) AND CS/CU(001) DETERMINED BY SURFACE X-RAY-DIFFRACTION [J].

MEYERHEIM, HL ;

WEVER, J ;

JAHNS, V ;

MORITZ, W ;

ENG, PJ ;

ROBINSON, IK .

SURFACE SCIENCE, 1994, 304 (03) :267-280

[10] One-dimensional commensurate-incommensurate transition: Bromide on the Au(100) electrode [J].

Ocko, BM ;

Magnussen, OM ;

Wang, JX ;

Wandlowski, T .

PHYSICAL REVIEW B, 1996, 53 (12) :R7654-R7657