Abstract
Angle-resolved inverse-photoemission spectra have been measured on the nonreconstructed As:Si(111)-1×1 surface along the two main directions Γ¯K¯ and Γ¯M¯ of the surface Brillouin zone. We observed three empty bands, the lower one of which is characteristic of a surface state partly resonant with bulk states in good agreement with theoretical calculations. We also observed a marked asymmetry in the dispersion along the M¯’Γ¯M¯ direction.
Original language | English |
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Pages (from-to) | 16539-16543 |
Number of pages | 5 |
Journal | Physical review. B, Condensed matter |
Volume | 49 |
Issue number | 23 |
DOIs | |
Publication status | Published - 1994 |