Abstract

The Si(111)√3×√3:BR30 o surface has been studied with k-resolved inverse photoemission and angle-resolved photoemission. In the unoccupied region of the band structure, one strongly dispersing surface state is observed and in the occupied region, three surface states are observed. The unoccupied surface state is identified as an empty dangling-bond state and two of the occupied surface states are identified as backbond states of the adatom

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