Observation of the Approach to a Polarization Catastrophe
- 14 April 1980
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 44 (15) , 1019-1022
- https://doi.org/10.1103/physrevlett.44.1019
Abstract
Optical measurements of phosphorus-doped silicon yield a donor susceptibility which can be fitted with a critical form that extrapolates to a polarization catastrophe at the insulator-metal transition. The exponent is about twice classical predictions and demonstrates the quantum nature of the transition.Keywords
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