Abstract
We report the observation of a 1D molecular adsorbate band structure caused by direct adsorbate-adsorbate interactions on a semiconductor.For ethylene chemisorbed on Si(001)-(2×1) two adsorbate-derived electronic states, 1b3u and 1b2g, are found to delocalize along the Si-Si dimer rows.The corresponding bands can be followed in reciprocal space from the Γ¯ point into the third surface Brillouin zone.Density functional calculations for ethylene adsorbed on a silicon slab reproduce the experimental 1D band structure and allow us to identify the origin of the lateral interactions.
Original language | English |
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Pages (from-to) | 4269-4272 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 80 |
Issue number | 19 |
DOIs | |
State | Published - 1998 |