Observation of Si(111)-√3 x √3-Ag surface at room temperature by reflection high-energy positron diffraction

被引：5

作者：

Fukaya, Y ^{[1
]}

Kawasuso, A ^{[1
]}

Hayashi, K ^{[1
]}

Ichimiya, A ^{[1
]}

机构：

[1] Japan Atom Energy Res Inst, Adv Sci Res Ctr, Takasaki, Gumma 3701292, Japan

来源：

APPLIED SURFACE SCIENCE | 2005年 / 244卷 / 1-4期

关键词：

surface structure; reflection high-energy positron diffraction (RHEPD); total reflection; silicon; silver;

D O I：

10.1016/j.apsusc.2004.10.077

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：

We have observed the Si(1 1 1)-root 3 x root 3-Ag surface using reflection high-energy positron diffraction (RHEPD). The RHEPD pattern clearly displays the intense (+/- 2/3 +/- 2/3) spots, which results from the large magnitude of the scattering factor for the Ag atoms. The rocking curves of the RHPED at room temperature have been measured and analyzed by means of the dynamical diffraction theory. We found that the atomic height of the topmost Ag triangle is 0.77 angstrom and is well in accordance with those determined by the other methods. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：166 / 169

页数：4

共 17 条

[1] Asymmetric structure of the Si(111)-√3 x √3-Ag surface [J].

Aizawa, H ;

Tsukada, M ;

Sato, N ;

Hasegawa, S .

SURFACE SCIENCE, 1999, 429 (1-3) :L509-L514

[2] ON THE DOYLE-TURNER REPRESENTATION OF THE OPTICAL-POTENTIAL FOR RHEED CALCULATIONS [J].

DUDAREV, SL ;

PENG, LM ;

WHELAN, MJ .

SURFACE SCIENCE, 1995, 330 (01) :86-100

[3]

FUKAYA Y, IN PRESS PHYS REV B, P70

[4] RHEED INTENSITY ANALYSIS OF SI(111) SQUARE-ROOT-3 X SQUARE-ROOT-3-AG STRUCTURE [J].

ICHIMIYA, A ;

KOHMOTO, S ;

FUJII, T ;

HORIO, Y .

APPLIED SURFACE SCIENCE, 1989, 41-2 :82-87

[5] MANY-BEAM CALCULATION OF REFLECTION HIGH-ENERGY ELECTRON-DIFFRACTION (RHEED) INTENSITIES BY THE MULTI-SLICE METHOD [J].

ICHIMIYA, A .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1983, 22 (01) :176-180

[6]

Ichimiya A., 1992, Solid State Phenom, V28-29, P143

[7]

ICHIMIYA A, 1987, SURF SCI, V192, P893

[8] Improvement of the electrostatic positron beam apparatus and observation system for RHEPD experiment [J].

Ishimoto, T ;

Kawasuso, A ;

Itoh, H .

APPLIED SURFACE SCIENCE, 2002, 194 (1-4) :43-46

[9] Si(111)-(7x7) surface probed by reflection high-energy positron diffraction [J].

Kawasuso, A ;

Fukaya, Y ;

Hayashi, K ;

Maekawa, M ;

Okada, S ;

Ichimiya, A .

PHYSICAL REVIEW B, 2003, 68 (24)

[10] Reflection high energy positron diffraction from a Si(111) surface [J].

Kawasuso, A ;

Okada, S .

PHYSICAL REVIEW LETTERS, 1998, 81 (13) :2695-2698

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