Local structure of NH2 on Si(100)-(2x1) and its effect on the asymmetry of the Si surface dimers

被引：50

作者：

Franco, N

Avila, J

Davila, ME

Asensio, MC

Woodruff, DP

Schaff, O

Fernandez, V

Schindler, KM

Fritzsche, V

Bradshaw, AM

机构：

[1] UNIV WARWICK,DEPT PHYS,COVENTRY CV4 7AL,W MIDLANDS,ENGLAND

[2] MAX PLANCK GESELL,FRITZ HABER INST,D-14195 BERLIN,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.79.673

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A scanned-energy mode photoelectron diffraction study of the Si(100)-(2 x 1) surface with adsorbed NH2 provides quantitative determination of key structural parameters previously only predicted from theoretical calculations. In particular, the N atoms occupy off-atop sites at a dimerized surface Si atom with N-Si bond lengths of 1.73 +/- 0.08 Angstrom and bond angle relative to the surface normal of 21 degrees +/- 4 degrees. The adsorption greatly reduces the Si dimer asymmetry relative to that of the clean surface.

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页码：673 / 676

页数：4

相关论文

共 35 条

[1] A PHOTOEMISSION-STUDY OF AMMONIA ADSORPTION ON SI(100)2X1 AND SI(111)2X1 SURFACES [J].

BISCHOFF, JL ;

KUBLER, L ;

BOLMONT, D ;

SEBENNE, CA ;

LACHARME, JP ;

BONNET, JE ;

HRICOVINI, K .

SURFACE SCIENCE, 1993, 293 (1-2) :35-40

[2] REACTION OF SI(100) WITH NH3 - RATE-LIMITING STEPS AND REACTIVITY ENHANCEMENT VIA ELECTRONIC EXCITATION [J].

BOZSO, F ;

AVOURIS, P .

PHYSICAL REVIEW LETTERS, 1986, 57 (09) :1185-1188

[3] PHOTOEMISSION-STUDIES OF THE REACTIONS OF AMMONIA AND N-ATOMS WITH SI(100)-(2X1) AND SI(111)-(7X7) SURFACES [J].

BOZSO, F ;

AVOURIS, P .

PHYSICAL REVIEW B, 1988, 38 (06) :3937-3942

[4] SURFACE CORE-LEVEL PHOTOELECTRON DIFFRACTION FROM SI DIMERS AT THE SI(001)-(2X1) SURFACE [J].

BULLOCK, EL ;

GUNNELLA, R ;

PATTHEY, L ;

ABUKAWA, T ;

KONO, S ;

NATOLI, CR ;

JOHANSSON, LSO .

PHYSICAL REVIEW LETTERS, 1995, 74 (14) :2756-2759

[5]

DABROWSKI J, 1992, APPL SURF SCI, V56-8, P15, DOI 10.1016/0169-4332(92)90208-F

[6] A PHOTOELECTRON DIFFRACTION STUDY OF THE STRUCTURE OF PF3 ADSORBED ON NI(111) [J].

DIPPEL, R ;

WEISS, KU ;

SCHINDLER, KM ;

GARDNER, P ;

FRITZSCHE, V ;

BRADSHAW, AM ;

ASENSIO, MC ;

HU, XM ;

WOODRUFF, DP ;

GONZALEZELIPE, AR .

CHEMICAL PHYSICS LETTERS, 1992, 199 (06) :625-630

[7] THE ADSORPTION AND DECOMPOSITION OF NH3 ON SI(100) - DETECTION OF THE NH2(A) SPECIES [J].

DRESSER, MJ ;

TAYLOR, PA ;

WALLACE, RM ;

CHOYKE, WJ ;

YATES, JT .

SURFACE SCIENCE, 1989, 218 (01) :75-107

[8] An x-ray standing-wave study of H2S adsorption on InP(110) [J].

Dudzik, E ;

Leslie, A ;

OToole, E ;

McGovern, IT ;

Patchett, A ;

Zahn, DRT ;

Ludecke, J ;

Woodruff, DP ;

Cowie, BCC .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1996, 8 (01) :15-24

[9] DIRECT PHOTOELECTRON-DIFFRACTION METHOD FOR ADSORBATE STRUCTURAL DETERMINATIONS [J].

FRITZSCHE, V ;

WOODRUFF, DP .

PHYSICAL REVIEW B, 1992, 46 (24) :16128-16134

[10] LINEAR-SUPERPOSITION METHOD FOR THE MULTIPLE-SCATTERING PROBLEM IN LOW-ENERGY-PHOTOELECTRON DIFFRACTION [J].

FRITZSCHE, V ;

PENDRY, JB .

PHYSICAL REVIEW B, 1993, 48 (12) :9054-9057

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