SURFACE DIPOLE-MOMENTS FROM LEED INVESTIGATIONS

被引：11

作者：

FRITZSCHE, V ^{[1
]}

PENDRY, JB ^{[1
]}

LOFFLER, U ^{[1
]}

WEDLER, H ^{[1
]}

MENDEZ, MA ^{[1
]}

HEINZ, K ^{[1
]}

机构：

[1] UNIV ERLANGEN NURNBERG,LEHRSTUHL FESTKORPERPHYS,W-8520 ERLANGEN,GERMANY

来源：

SURFACE SCIENCE | 1993年 / 289卷 / 03期

关键词：

D O I：

10.1016/0039-6028(93)90670-F

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：

Alkali adsorbates on transition metals have traditionally given Poor R factors for LEED theory/ experiment comparison. In this paper we postulate that at least part of the remaining discrepancy is due to the non-spherical potential caused by a dipole moment on the alkali atom. Inclusion of a dipole in the fitting procedure gives a reasonable magnitude for the dipole, and a location not far from the centre of the alkali. The R factor shows a substantial improvement.

引用

页码：389 / 396

页数：8

共 37 条

[1] MULTIPLE COINCIDENCES IN SURFACE-STRUCTURE DETERMINATIONS [J].

ANDERSSON, S ;

PENDRY, JB .

SOLID STATE COMMUNICATIONS, 1975, 16 (05) :563-566

[2] NOVEL FEATURES OF POTASSIUM AND SODIUM VIBRATIONS ON COPPER SURFACES OBSERVED BY HIGH-RESOLUTION ELECTRON-ENERGY-LOSS SPECTROSCOPY [J].

ASTALDI, C ;

RUDOLF, P ;

MODESTI, S .

SOLID STATE COMMUNICATIONS, 1990, 75 (11) :847-850

[3] THE SURFACE-STRUCTURE OF A C(2 X-2) POTASSIUM OVERLAYER ON CO(1010) [J].

BARNES, CJ ;

HU, P ;

LINDROOS, M ;

KING, DA .

SURFACE SCIENCE, 1991, 251 :561-567

[4]

BONZEL HP, 1989, PHYSICS CHEM ALKALI

[5] MULTIPLE-SCATTERING THEORY FOR SPACE-FILLING CELL POTENTIALS [J].

BUTLER, WH ;

GONIS, A ;

ZHANG, XG .

PHYSICAL REVIEW B, 1992, 45 (20) :11527-11541

[6] OVERLAYER STRUCTURE DETERMINATION BY LEED AT LOW ENERGIES - NA ON NI(001) [J].

DEMUTH, JE ;

JEPSEN, DW ;

MARCUS, PM .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1975, 8 (02) :L25-L30

[7] TOP-SITE ADSORPTION FOR POTASSIUM ON NI(111) [J].

FISHER, D ;

CHANDAVARKAR, S ;

COLLINS, IR ;

DIEHL, RD ;

KAUKASOINA, P ;

LINDROOS, M .

PHYSICAL REVIEW LETTERS, 1992, 68 (18) :2786-2789

[8]

GIERER M, 1992, SURF SCI, V279, pL170, DOI 10.1016/0039-6028(92)90731-K

[9] STRUCTURAL-ANALYSIS OF SURFACES BY LEED [J].

HEINZ, K .

PROGRESS IN SURFACE SCIENCE, 1988, 27 (04) :239-326

[10]

Heinz T., 1995, LOW ENERGY ELECTRON, V14, P1421

← 1 2 3 4 →