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VOLUME 43 (1986) | ISSUE 7 | PAGE 332
Observation of exciton states in the magnetoabsorption spectra of lead telluride
A low-voltage electroabsorption has been observed in lead telliiride in a magnetic field. This electroabsorption sets in after a threshold is reached, goes through a maximum at Ε J ~ 1-3 V/cm, and decays to zero at E0^>E$. This behavior is attributed to the appearance of exciton states in a magnetic field, which are then destroyed by impact ionization in the electric field.