Relevant effects of localized atomic interactions and surface density of states on charge transfer in ion-surface collisions

被引：20

作者：

Bonetto, F. ^{[1
]}

Romero, M. A. ^{[1
]}

Garcia, E. A. ^{[1
]}

Vidal, R. ^{[1
]}

Ferron, J. ^{[1
,2
]}

Goldberg, E. C. ^{[1
,2
]}

机构：

[1] Consejo Nacl Invest Cient & Tecn CONICET, Inst Desarrollo Tecn Ind Quim, Santa Fe, Argentina

[2] Univ Nacl Litoral, Dept Ingn Mat, Fac Ingn Quim, Santa Fe, Argentina

来源：

EPL | 2007年 / 80卷 / 05期

关键词：

D O I：

10.1209/0295-5075/80/53002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Through a time-dependent quantum-mechanical calculation of the H+ scattering by a highly oriented pyrolitic graphite (HOPG) surface, we are able to satisfactorily reproduce the interesting features we observed in ion scattering experiments in H+/HOPG system. We found that the combined effects of the semimetal character of HOPG together with the localized nature of the carbon atom states primarily determine the angular dependence and the magnitude of the ion fractions for large outgoing angles. The spin fluctuation effects (not considered in the present calculation) are discussed as one of the the main causes of the disagreement between the spinless theory results and the experiments for small exit angles. Copyright (C) EPLA, 2007.

引用

页数：6

共 35 条

[1] POSITIVE CHARGE FRACTIONS OF H, D, AND HE BACKSCATTERED FROM SOLID-SURFACES [J].

BHATTACHARYA, RS ;

ECKSTEIN, W ;

VERBEEK, H .

SURFACE SCIENCE, 1980, 93 (2-3) :563-581

[2] Resonant charge transfer in ion-metal surface collisions:: Effect of a projected band gap in the H--Cu(111) system [J].

Borisov, AG ;

Kazansky, AK ;

Gauyacq, JP .

PHYSICAL REVIEW B, 1999, 59 (16) :10935-10949

[3] Resonant charge transfer in grazing scattering of alkali-metal ions from an Al(111) surface [J].

Borisov, AG ;

TeilletBilly, D ;

Gauyacq, JP ;

Winter, H ;

Dierkes, G .

PHYSICAL REVIEW B, 1996, 54 (23) :17166-17174

[4] H- FORMATION BY ELECTRON-CAPTURE IN HYDROGEN-AL(111) COLLISIONS - PERTURBATIVE AND NONPERTURBATIVE APPROACHES [J].

BORISOV, AG ;

TEILLETBILLY, D ;

GAUYACQ, JP .

SURFACE SCIENCE, 1992, 278 (1-2) :99-110

[5] ELECTRONIC-STRUCTURE APPROACH FOR COMPLEX SILICAS [J].

DEMKOV, AA ;

ORTEGA, J ;

SANKEY, OF ;

GRUMBACH, MP .

PHYSICAL REVIEW B, 1995, 52 (03) :1618-1630

[6] Low-energy electron diffraction study of potassium adsorbed on single-crystal graphite and highly oriented pyrolytic graphite [J].

Ferralis, N ;

Pussi, K ;

Finberg, SE ;

Smerdon, J ;

Lindroos, M ;

McGrath, R ;

Diehl, RD .

PHYSICAL REVIEW B, 2004, 70 (24) :1-6

[7] CHARGE-TRANSFER PROCESSES IN ATOM-SURFACE COLLISIONS AT LOW ENERGIES - A GREENS-FUNCTION APPROACH [J].

GARCIA, EA ;

GOLDBERG, EC ;

PASSEGGI, MCG .

SURFACE SCIENCE, 1995, 325 (03) :311-322

[8] Ion fractions in the scattering of hydrogen on different reconstructed silicon surfaces [J].

Garcia, Evelina A. ;

Pascual, C. Gonzalez ;

Bolcatto, P. G. ;

Passeggi, M. C. G. ;

Goldberg, E. C. .

SURFACE SCIENCE, 2006, 600 (10) :2195-2206

[9]

Gleeson MA, 1998, AIP CONF PROC, V439, P37

[10] Effects of Cs-adsorption on the scattering of low energy hydrogen ions from HOPG [J].

Gleeson, MA ;

Kleyn, AW .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1999, 157 (1-4) :48-54

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