Abstract
The technique of photoelectron holography has been applied to the (√3 × √3)R30° phase of 1 3 - monolayer Pb on Ge(111) for a determination of the local bonding structure of the Pb adatom. Angle-resolved photoemission from the Pb 5d core level shows intensity oscillations as a function of photon energy due to diffraction effects. These oscillations were measured at various emission angles and Fourier inverted to yield three-dimensional real-space images of the nearest neighbours to the Pb emitter atom, which is bonded at the T 4 site. The use of the small-cone technique to eliminate artifacts is discussed.
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