Adsorbate-induced enhancement of image-potential surface states on Ni(110)
Inverse photoemission data of Ni(110)-c(2 x 2)-S exhibit an adsorbate-induced feature that is interpreted as an image-potential surface state by the following criteria: energetic position and width, dispersion as a function of k, crystal reflectivity, and magnetic exchange splitting. This experiment shows that adsorption of adatoms on a surface not only either quench or shift image-potential surface states but also may enhance their intensity due to an increased crystal reflectivity. In addition, the spin-resolved data reveal an image state on a ferromagnetic surface which is exchange split by about 30 meV.
Bibliographic Reference: Article: Surface Science Letters, Vol. 262 (1992) pp. L49-L54
Record Number: 199210739 / Last updated on: 1994-12-02
Original language: en
Available languages: en