Effect of O2 adsorption on electron scattering at Cu(001) surfaces

被引：61

作者：

Chawla, J. S. ^{[1
]}

Zahid, F. ^{[2
]}

Guo, H. ^{[2
]}

Gall, D. ^{[1
]}

机构：

[1] Rensselaer Polytech Inst, Dept Mat Sci & Engn, New York, NY 12180 USA

[2] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 13期

关键词：

THIN METAL-FILMS; RESISTIVITY; CU; CONDUCTIVITY; MECHANISMS; OXYGEN;

D O I：

10.1063/1.3489357

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electrical resistance of epitaxial Cu(001) sequentially increases, decreases, and again increases when exposed to 10(-3)-10(5) Pa s of O-2. This is attributed to partial specular surface scattering for smooth clean Cu(001) and for the surface with a complete adsorbed monolayer, but diffuse scattering at partial coverage and after chemical oxidation. A model relates the surface coverage to the specularity parameter and finds adatom and advacancy scattering cross-sections of 0.8 +/- 0.2 and 0.06 +/- 0.03 nm(2), which are qualitatively validated by nonequilibrium ab initio transport simulations. The rates for resistance change are proportional to the O-2 partial pressure. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3489357]

引用

页数：3

共 30 条

[1] Adsorption on carbon nanotubes studied using polarization-modulated infrared reflection-absorption spectroscopy
Bermudez, VM
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (20) : 9970 - 9979
[2] Specular electron scattering at single-crystal Cu(001) surfaces
Chawla, J. S.
Gall, D.
[J]. APPLIED PHYSICS LETTERS, 2009, 94 (25)
[3] Interaction of nanostructured metal overlayers with oxide surfaces
Fu, Qiang
Wagner, Thomm
[J]. SURFACE SCIENCE REPORTS, 2007, 62 (11) : 431 - 498
[4] The conductivity of thin metallic films according to the electron theory of metals
Fuchs, K
[J]. PROCEEDINGS OF THE CAMBRIDGE PHILOSOPHICAL SOCIETY, 1938, 34 : 100 - 108
[5] Relationship between adatom-induced surface resistivity and the wind force for adatom electromigration: A layer Korringa-Kohn-Rostoker study
Hedouin, MFG
Rous, AF
[J]. PHYSICAL REVIEW B, 2000, 62 (12) : 8473 - 8477
[6] CHANGES OF THE DC RESISTIVITY AND THE BROAD-BAND IR REFLECTIVITY OF THIN METAL-FILMS DUE TO COVERAGE
HEIN, M
SCHUMACHER, D
[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1995, 28 (09) : 1937 - 1941
[7] Resistivity of thin Cu films with surface roughness
Ke, Youqi
Zahid, Ferdows
Timoshevskii, V.
Xia, Ke
Gall, D.
Guo, Hong
[J]. PHYSICAL REVIEW B, 2009, 79 (15)
[8] Disorder scattering in magnetic tunnel junctions: Theory of nonequilibrium vertex correction
Ke, Youqi
Xia, Ke
Guo, Hong
[J]. PHYSICAL REVIEW LETTERS, 2008, 100 (16)
[9] Multiple mechanisms for adsorbate-induced resistivity: oxygen and formate on Cu(100)
Krastev, ET
Kuhl, DE
Tobin, RG
[J]. SURFACE SCIENCE, 1997, 387 (1-3) : L1051 - L1056
[10] Oxygen adsorption-induced nanostructures and island formation on Cu{100}: Bridging the gap between the formation of surface confined oxygen chemisorption layer and oxide formation
Lahtonen, K.
Hirsimaki, M.
Lampimaki, M.
Valden, M.
[J]. JOURNAL OF CHEMICAL PHYSICS, 2008, 129 (12)

← 1 2 3 →