Screening of Wannier Exciton States near the Metal-Insulator Transition
- 19 June 1972
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 28 (25), 1643-1646
- https://doi.org/10.1103/physrevlett.28.1643
Abstract
We provide a new spectroscopic criterion for the observation of the insulator-metal transition in a two-component system, which is based on the disappearance of Wannier exciton states in the metallic region. This effect has been observed in the vacuum-ultraviolet spectra of mercury/xenon mixtures deposited at 10-30°K, where the Xe Wannier states are abruptly washed out at (55±5)% of Hg.Keywords
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