Olle Eriksson

Publications (2)0 Total impact

• Article: Reflectance anisotropy spectra of Cu and Ag (110) surfaces from ab initio theory

  Patrizia Monachesi, Maurizia Palummo, Rodolfo Del Sole, Rajeev Ahuja, Olle Eriksson
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  ABSTRACT: Reflectance anisotropy spectra of Cu and Ag (110) surfaces are obtained by ab initio calculations. We disentangle the effects of the intraband and interband parts of the bulk dielectric function in the spectra, splitting them further into components stemming from bulk and surface states. As in the case of semiconductor surfaces, transitions across bulk states yield large contributions. A good description of experimental results is obtained. We find evidence of a small surface dielectric anisotropy due to intraband transitions.
  Phys. Rev. B. 08/2001; 64(11).
• Source

  Available from: uniroma2.it

  Article: Reflectivity Anisotropy Spectra of Cu- and Ag- (110) surfaces from {\it ab initio} theory

  Patrizia Monachesi, Maurizia Palummo, Rodolfo Del Sole, Rajeev Ahuja, Olle Eriksson
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  ABSTRACT: We are able to disentagle the effects of the intraband and interband parts of the bulk dielectric function on the bare dielectric anisotropy of the surface. We show how the position, sign and amplitude of the structures observed in such spectra depend on the above quantities. The lineshape of all the calculated structures agree very well with the ones observed experimentally for samples treated by suitable surface cleaning. In particular, we reproduce the observed single peak structure of Ag at high energy, found to represent a state of the clean surface different from the one giving the originally observed double peak structure. This results is not reproduced by the 'local field' model. Comment: 4 pages, 3 figures. submitted to Phys. Rev. Lett
  05/2000;