Self-doping of gold chains on silicon: A new structural model for Si(111)-(5x2)-Au

被引：81

作者：

Erwin, SC ^{[1
]}

机构：

[1] USN, Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.91.206101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new structural model for the Si(111)-(5x2)-Au reconstruction is proposed and analyzed using first-principles calculations. The basic model consists of a "double honeycomb chain" decorated by Si adatoms. The 5x1 periodicity of the honeycomb chains is doubled by the presence of a half-occupied row of Si atoms that partially rebonds the chains. Additional adatoms supply electrons that dope the parent band structure and stabilize the period doubling; the optimal doping corresponds to one adatom per four 5x2 cells, in agreement with experiment. All the main features observed in scanning tunneling microscopy and photoemission are well reproduced.

引用

页数：4

共 28 条

[1] Electronic structure of atomic chains on vicinal Si(111)-Au [J].

Altmann, KN ;

Crain, JN ;

Kirakosian, A ;

Lin, JL ;

Petrovykh, DY ;

Himpsel, FJ ;

Losio, R .

PHYSICAL REVIEW B, 2001, 64 (03)

[2] SI(111)-5X1-AU RECONSTRUCTION AS STUDIED BY SCANNING TUNNELING MICROSCOPY [J].

BASKI, AA ;

NOGAMI, J ;

QUATE, CF .

PHYSICAL REVIEW B, 1990, 41 (14) :10247-10249

[3] Atomic scale memory at a silicon surface [J].

Bennewitz, R ;

Crain, JN ;

Kirakosian, A ;

Lin, JL ;

McChesney, JL ;

Petrovykh, DY ;

Himpsel, FJ .

NANOTECHNOLOGY, 2002, 13 (04) :499-502

[4] SEGREGATION OF GOLD TO SILICON (111) SURFACE OBSERVED BY AUGER EMISSION SPECTROSCOPY AND BY LEED [J].

BISHOP, HE ;

RIVIERE, JC .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1969, 2 (12) :1635-&

[5] ANGLE-RESOLVED PHOTOEMISSION FROM AN UNUSUAL QUASI-ONE-DIMENSIONAL METALLIC SYSTEM - A SINGLE-DOMAIN AU-INDUCED 5X2 RECONSTRUCTION OF SI(111) [J].

COLLINS, IR ;

MORAN, JT ;

ANDREWS, PT ;

COSSO, R ;

OMAHONY, JD ;

MCGILP, JF ;

MARGARITONDO, G .

SURFACE SCIENCE, 1995, 325 (1-2) :45-49

[6] Fractional band filling in an atomic chain structure [J].

Crain, JN ;

Kirakosian, A ;

Altmann, KN ;

Bromberger, C ;

Erwin, SC ;

McChesney, JL ;

Lin, JL ;

Himpsel, FJ .

PHYSICAL REVIEW LETTERS, 2003, 90 (17) :4-176805

[7] Theory of the "honeycomb chain-channel" reconstruction of M/Si(111)-(3x1) [J].

Erwin, SC ;

Weitering, HH .

PHYSICAL REVIEW LETTERS, 1998, 81 (11) :2296-2299

[8] Domain growth of Si(111)-5x2 Au by high-temperature STM [J].

Hasegawa, T ;

Hosaka, S ;

Hosoki, S .

SURFACE SCIENCE, 1996, 357 (1-3) :858-862

[9] Inverse photoemission studies of two quasi-one-dimensional overlayer systems [J].

Hill, IG ;

McLean, AB .

APPLIED SURFACE SCIENCE, 1998, 123 :371-375

[10] Photoelectron spectroscopy of atomic wires [J].

Himpsel, FJ ;

Altmann, KN ;

Crain, JN ;

Kirakosian, A ;

Lin, JL ;

Liebsch, A .

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 2002, 126 (1-3) :89-99

← 1 2 3 →