Abstract
Localization and dephasing of conduction electrons in a low carrier density ferromagnet due to scattering on magnetic fluctuations is considered. We claim the existence of the "mobility edge , which separates the states with fast diffusion and the states with slow diffusion; the latter is determined by the dephasing time. When the "mobility edge" crosses the Fermi energy a large and sharp change of conductivity is observed. The theory provides an explanation for the observed temperature dependence of conductivity in ferromagnetic semiconductors and manganite pyrochlores.
| Original language | English |
|---|---|
| Pages (from-to) | 373-376 |
| Number of pages | 4 |
| Journal | European Physical Journal B |
| Volume | 9 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1 Jun 1999 |
Keywords
- 72.10.-d Theory of electronic transport; scattering mechanisms
- 72.10.Di Scattering by phonons, magnons, and other nonlocalized excitations
- 75.50.Pp Magnetic semiconductors
- 75.70.Pa Giant magnetoresistance
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics