Adsorbate-induced changes in the broadband infrared transmission of ultrathin metal films

被引:31
作者
Fahsold, G [1 ]
Sinther, M [1 ]
Priebe, A [1 ]
Diez, S [1 ]
Pucci, A [1 ]
机构
[1] Heidelberg Univ, Kirchhoff Inst Phys, D-69120 Heidelberg, Germany
关键词
D O I
10.1103/PhysRevB.65.235408
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
For exposure of CO and of O-2 we studied adsorbate-induced changes in the broadband infrared transmission of ultrathin continuous films of iron and of copper at normal incidence of light. The observed broadband changes correspond to additional conduction electron scattering, but also to charge transfer by the adsorbate, since both of these effects alter the dynamic conductivity of the films. We succeeded in calculating both the amount of charge transfer and the additional relaxation rate from infrared transmission spectra. However, proper dynamic-conductivity data of the pure metal films were crucial for this spectral analysis.
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页码:1 / 8
页数:8
相关论文
共 39 条
[1]   EMPIRICAL ELECTRON-PHONON-GAMMA VALUES FROM RESISTIVITY OF CUBIC METALLIC ELEMENTS [J].
ALLEN, PB .
PHYSICAL REVIEW B, 1987, 36 (05) :2920-2923
[2]  
Ashcroft N. W., 1973, SOLID STATE PHYS
[3]  
Azzam R., 1977, ELLIPSOMETRY POLARIZ
[4]  
Bennett H. E., 1966, OPTICAL PROPERTIES E
[5]   CALCULATION OF 2D OPTICAL DIELECTRIC FUNCTION OF INHOMOGENEOUS-MEDIA BY REAL SPACE RENORMALIZATION [J].
BERTHIER, S ;
DRISSKHODJA, K .
OPTICS COMMUNICATIONS, 1989, 70 (01) :29-32
[6]   MOLECULAR ORBITAL VIEW OF CHEMISORBED CARBON MONOXIDE [J].
BLYHOLDER, G .
JOURNAL OF PHYSICAL CHEMISTRY, 1964, 68 (10) :2772-&
[7]   Electronic structure investigation of Cu(110), Ag(110) and Ni(110) surfaces covered with chemisorbed oxygen up to half a monolayer [J].
Courths, R ;
Hufner, S ;
Kemkes, P ;
Wiesen, G .
SURFACE SCIENCE, 1997, 376 (1-3) :43-59
[8]   Friction of molecules at metallic surfaces: experimental approach using synchrotron infrared spectroscopy [J].
Dumas, P ;
Hein, M ;
Otto, A ;
Persson, BNJ ;
Rudolf, P ;
Raval, R ;
Williams, GP .
SURFACE SCIENCE, 1999, 433 :797-805
[9]   Infrared optical properties of ultrathin Fe films on MgO(001) beyond the percolation threshold [J].
Fahsold, G ;
Bartel, A ;
Krauth, O ;
Magg, N ;
Pucci, A .
PHYSICAL REVIEW B, 2000, 61 (20) :14108-14113
[10]   In-situ investigation of Fe ultrathin film growth by infrared transmission spectroscopy [J].
Fahsold, G ;
Bartel, A ;
Krauth, O ;
Lehmann, A .
SURFACE SCIENCE, 1999, 433 :162-166