Title of article :
The effect of adsorption of Na on Cu(1 1 0) surface states probed by second harmonic generation
Author/Authors :
Dounce، نويسنده , , Susan M. and Dai، نويسنده , , Hai-Lung، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2005
Pages :
5
From page :
310
To page :
314
Abstract :
A quantum mechanical model [S.M. Dounce, M. Yang, H.L. Dai, Physical Review B 67 (2003) 205410/1] previously developed for describing second harmonic generation resonantly enhanced by surface state transitions has been applied to model the second harmonic intensity from a Cu(1 1 0) surface measured as a function of Na submonolayer coverage [C. Schwab, G. Meister, A. Goldmann, E. Bertel, Surface Science 469 (2000) 93]. The enhancement of the second harmonic intensity (fundamental at 1064 nm) at the Na coverage of 0.6 monolayers is shown to originate from resonance with the transitions between the surface states at Y ¯ on Cu(1 1 0). The analysis allows the determination of the Na adsorption-induced energy shifts of the occupied and unoccupied states respectively as dEa/dθNa = −0.545 ± 0.033 eV/ML and dEb/dθNa = −1.932 ± 0.035 eV/ML, and the Na adsorption-induced linewidth broadening as dΓ/dθNa = 0.328 ± 0.010 eV/ML.
Keywords :
Chemisorption , Surface states , alkali metals , Low index single crystal surfaces , second harmonic generation , Copper
Journal title :
Surface Science
Serial Year :
2005
Journal title :
Surface Science
Record number :
1685179
Link To Document :
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