Dielectric anomalies near the Anderson metal-insulator transition

Yoseph Imry*, Yuval Gefen, David J. Bergman

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review


The linear-response expressions for the dielectric constant and conductivity as functions of wave number and frequency are evaluated near the localization metal-insulator transition for noninteracting quasiparticles. New behavior is found in the microscopic range. The static dielectric constant from the insulating side is found to diverge with twice the exponent characterizing the vanishing of the conductivity from the metallic side. The dynamic structure factor follows easily from our expressions and we suggest that it can be measured, in principle, using high-frequency electromagnetic radiation.

Original languageEnglish
Pages (from-to)3436-3439
Number of pages4
JournalPhysical Review B-Condensed Matter
Issue number6
StatePublished - 1982


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