Abstract
Abstract The two-dimensional electronic bandstructure of monolayer Bi on InP(110) has been mapped by angle resolved ultra violet photoelectron spectroscopy using synchrotron radiation. The dispersion of the features in the valence band spectra was followed along the four symmetry directions of the surface Brillouin zone. It is possible to distinguish five states as surface related. The topmost band is found to be inside the fundamental band gap, at about 0.45 eV above the valence band maximum. Limited application of polarisation effects was made to probe the nature of the states. In the absence of a suitable calculation, the results are compared to measurements and calculations of other V/III–V(110) systems.
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