R. F. Milligan, Gordon Thomas

Research output: Chapter in Book/Report/Conference proceedingChapter

19 Scopus citations


The vast majority of naturally occurring elements on earth are characterized by having metallic behavior in the condensed state (i. e. either as solids or liquids). These materials possess itinerant electrons that produce the electrical and thermal transport properties and optical properties that we associate with metals. Most condensed matter scientists would explain the existence of itinerant electrons in the solid in terms of the electronic band structure, and we start with that approach here. Although elements that are insulators at normal pressures can be forced into the metallic phase by the application of extraordinarily high pressures, most experiments on the metal-insulator (MI) transition have involved heterogeneous systems that are much easier to study. We limit our discussion to the technologically important doped semiconductors and amorphous semiconductor-metal alloys, in which both disorder and Coulomb interactions between charges play important roles in altering the optical, magnetic, and transport properties near the transition.

Original languageAmerican English
Title of host publicationAnnual Review of Physical Chemistry
Number of pages20
StatePublished - Dec 1 1985
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this