Role of surface elastic relaxations in an O-induced nanopattern on Pt(110)-(1 x 2)

被引：26

作者：

Helveg, S. ^{[1
]}

Li, W. X.

Bartelt, N. C.

Horch, S.

Laegsgaard, E.

Hammer, B.

Besenbacher, F.

机构：

[1] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark

[2] Aarhus Univ, Interdisciplinary Nanosci Ctr, DK-8000 Aarhus, Denmark

[3] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

[4] Chinese Acad Sci, Dalian Inst Chem Phys, Ctr Theoret & Computat Chem, Dalian 116023, Peoples R China

[5] Sandia Natl Labs, Livermore, CA 94550 USA

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.98.115501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Scanning tunneling microscopy shows that a nanopattern forms as the Pt(110)-(1x2) surface is exposed to oxygen at room temperature or above. The nanopattern consists of [110] oriented O-induced stripes assembling into a (11x2) superstructure at high O coverage. The stripes form because the O adsorption energy increases by expanding the Pt lattice along the ridges of the surface as compared to the bulk. From interplay with density functional theory calculations, we show that the O-induced nanoscale periodicity is caused by short-ranged elastic relaxations confined to the surface.

引用

页数：4

共 20 条

[1] THE INFLUENCE OF STEP STEP INTERACTIONS ON STEP WANDERING [J].

BARTELT, NC ;

EINSTEIN, TL ;

WILLIAMS, ED .

SURFACE SCIENCE, 1990, 240 (1-3) :L591-L598

[2] ANISOTROPY OF THE STRESS ON FCC(110) SURFACES [J].

FEIBELMAN, PJ .

PHYSICAL REVIEW B, 1995, 51 (24) :17867-17875

[3] Oxygen adsorption on Pt(110)-(1x2):: new high-coverage structures [J].

Helveg, S ;

Lorensen, HT ;

Horch, S ;

Lægsgaard, E ;

Stensgaard, I ;

Jacobsen, KW ;

Norskow, JK ;

Besenbacher, F .

SURFACE SCIENCE, 1999, 430 (1-3) :L533-L539

[4] Striped phase and temperature dependent step shape transition on highly B-doped Si(001)-(2x1) surfaces [J].

Jones, DE ;

Pelz, JP ;

Hong, Y ;

Bauer, E ;

Tsong, IST .

PHYSICAL REVIEW LETTERS, 1996, 77 (02) :330-333

[5] LONG-RANGE SPATIAL SELF-ORGANIZATION IN THE ADSORBATE-INDUCED RESTRUCTURING OF SURFACES - CU(110)-(2X1)O [J].

KERN, K ;

NIEHUS, H ;

SCHATZ, A ;

ZEPPENFELD, P ;

GEORGE, J ;

COMSA, G .

PHYSICAL REVIEW LETTERS, 1991, 67 (07) :855-858

[6] A high-pressure scanning tunneling microscope [J].

Laegsgaard, E ;

Osterlund, L ;

Thostrup, P ;

Rasmussen, PB ;

Stensgaard, I ;

Besenbacher, F .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2001, 72 (09) :3537-3542

[7] Effects of elastic anisotropy on the periodicity and orientation of striped stress domain patterns at solid surfaces -: art. no. 045416 [J].

Léonard, F ;

Bartelt, NC ;

Kellogg, GL .

PHYSICAL REVIEW B, 2005, 71 (04)

[8] Oxidation of Pt(110) -: art. no. 146104 [J].

Li, WX ;

Osterlund, L ;

Vestergaard, EK ;

Vang, RT ;

Matthiesen, J ;

Pedersen, TM ;

Lægsgaard, E ;

Hammer, B ;

Besenbacher, F .

PHYSICAL REVIEW LETTERS, 2004, 93 (14) :146104-1

[9]

MARCHENKO VI, 1981, SOV PHYS JETP, V54, P605

[10] ELASTIC STRESS DOMAINS AND THE HERRINGBONE RECONSTRUCTION ON AU(111) [J].

NARASIMHAN, S ;

VANDERBILT, D .

PHYSICAL REVIEW LETTERS, 1992, 69 (10) :1564-1567

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