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VOLUME 31 (1980) | ISSUE 2 | PAGE 122
Autoionization bands of electron-exciton complexes in periodic structures of reduced spatial dimension
The problem of interaction in the periodic structures of reduced spatial dimension of the Feshbach-type, one-center resonance states is raised and solved. It is shown that as a result of a strong exchange interaction these structures form autoionization bands of two-particles bound states (electron-exciton complexes) whose imaginary part of the dispersion law is a nonanalytic function of energy and of quasi momentum. The predicted states could have been observed in the experiments on reflection of monoenergetic electrons from the surface of a solid (graphite or metal) covered by a submonolayer film of inert gas.