Surface diffusion of Pb atoms on the Si(553)-Au surface in narrow quasi-one-dimensional channels

被引：13

作者：

Nita, P. ^{[1
]}

Palotas, K. ^{[2
,3
]}

Jalochowski, M. ^{[4
]}

Krawiec, M. ^{[4
]}

机构：

[1] Inst Madrileno Estudios Avanzados Nanociencia IMD, Madrid 28049, Spain

[2] Budapest Univ Technol & Econ, Dept Theoret Phys, H-1111 Budapest, Hungary

[3] Hungarian Acad Sci, Condensed Matter Res Grp, H-1111 Budapest, Hungary

[4] Marie Curie Sklodowska Univ, Inst Phys, PL-20031 Lublin, Poland

来源：

PHYSICAL REVIEW B | 2014年 / 89卷 / 16期

基金：

匈牙利科学研究基金会;

关键词：

HYDROGEN-ATOMS; SI ATOMS; SI(111)-(7X7); ADSORPTION; ADSORBATES; AU;

D O I：

10.1103/PhysRevB.89.165426

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The one-dimensional diffusion of individual Pb atoms on the Si(553)-Au surface has been investigated by a combination of scanning tunneling microscopy (STM), spectroscopy (STS), and first-principles density functional theory. The obtained results unambiguously prove that the diffusion channels are limited to a narrow region between Au chains and step edges of the surface. Much wider channels observed in STM and STS data have electronic origin and result from an interaction of Pb with surface atoms. The length of the channels is determined by a distance between defects at step edges of the Si(553)-Au surface. The defects can act as potential barriers or potential wells for Pb atoms, depending on their origin.

引用

页数：6

共 45 条

[1] Collective and single particle diffusion on surfaces [J].

Ala-Nissila, T ;

Ferrando, R ;

Ying, SC .

ADVANCES IN PHYSICS, 2002, 51 (03) :949-1078

[2] Jump processes in surface diffusion [J].

Antczak, Grazyna ;

Ehrlich, Gert .

SURFACE SCIENCE REPORTS, 2007, 62 (02) :39-61

[3]

Artacho E, 1999, PHYS STATUS SOLIDI B, V215, P809, DOI 10.1002/(SICI)1521-3951(199909)215:1<809::AID-PSSB809>3.0.CO

[4]

2-0

[5] The SIESTA method;: developments and applicability [J].

Artacho, Emilio ;

Anglada, E. ;

Dieguez, O. ;

Gale, J. D. ;

Garcia, A. ;

Junquera, J. ;

Martin, R. M. ;

Ordejon, P. ;

Pruneda, J. M. ;

Sanchez-Portal, D. ;

Soler, J. M. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2008, 20 (06)

[6] Transport of adsorbates at metal surfaces: From thermal migration to hot precursors [J].

Barth, JV .

SURFACE SCIENCE REPORTS, 2000, 40 (3-5) :75-149

[7] Surface diffusion of Pb single adatoms on the Si(111)-(√3x√3)R30°- Pb system [J].

Brihuega, I. ;

Ugeda, M. M. ;

Gomez-Rodriguez, J. M. .

PHYSICAL REVIEW B, 2007, 76 (03)

[8]

Brune H, 1998, SURF SCI REP, V31, P121, DOI 10.1016/S0167-5729(99)80001-6

[9] One-Dimensional Defect-Mediated Diffusion of Si Adatoms on the Si(111)-(5x2)-Au Surface [J].

Bussmann, E. ;

Bockenhauer, S. ;

Himpsel, F. J. ;

Swartzentruber, B. S. .

PHYSICAL REVIEW LETTERS, 2008, 101 (26)

[10] Diffusion of an adsorbed Si atom on the Si(111)-(7x7) surface [J].

Chang, CM ;

Wei, CM .

PHYSICAL REVIEW B, 2003, 67 (03)

← 1 2 3 4 5 →