Abstract
In this chapter, we describe how the impurity band in group-IV semiconductors is a fascinating subject in condensed matter physics and it manifests a rich diversified physics. After surveying the transport phenomena in the impurity band, metal-insulator transitions, and historical development of the localization theory, we discuss in particular how the electron-electron interactions play an important role in producing anomalous properties, such as peculiar spin-dependent phenomena in specific heat, spin susceptibility, magnetoresistance, etc., in the Anderson-localized regime just in the insulating side of metal-insulator transitions. The most part of chapter is devoted to explaining the theoretical development to treat the interplay of disorder and electron-electron interactions in the Anderson-localized regime of the impurity band. The readers can learn how these theories decipher the origins of various mysterious phenomena which the impurity band exhibits.
| Original language | English |
|---|---|
| Title of host publication | Comprehensive Semiconductor Science and Technology |
| Publisher | Elsevier Inc. |
| Pages | 77-112 |
| Number of pages | 36 |
| Volume | 1-6 |
| ISBN (Print) | 9780444531537 |
| DOIs | |
| Publication status | Published - 2011 Jan 1 |
ASJC Scopus subject areas
- Physics and Astronomy(all)