Abstract
The three dimensional translational symmetry of inorganic semiconductor crystals gives rise to collective excitations such as plasmons, rotons, electron-hole liquid, and excitonic molecules. Here, we show experimentally and theoretically that in a quasione-dimensional charge transfer (CT) organic crystal, the Coulomb attraction of CT excitons can form n-string excitons: bound states of several (more than two) excitons.1
© 1994 Optical Society of America
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