Small-polaron band versus hopping conduction in Fe3O4
- 30 July 1985
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 18 (21), L647-L650
- https://doi.org/10.1088/0022-3719/18/21/004
Abstract
The electrical small-polaron (SP) conductivity of Fe3O4 is calculated above the Verwey transition taking into account the polaronic short-range order. It is shown that the conductivity results from the superposition of SP band and SP hopping conduction. Concerning the DC conductivity below room temperature, the SP band conduction is the dominant mechanism. The observed maximum in the optical conductivity near 0.2 eV is explained as an SP hopping effect.Keywords
This publication has 14 references indexed in Scilit:
- Hopping conduction and the Coulomb gap; applications to Fe3O4, Ti4O7 and impurity conduction in Si:PPublished by Springer Science and Business Media LLC ,2007
- Correlation effects on the small-polaron hopping conductivityZeitschrift für Physik B Condensed Matter, 1985
- Polaronic Effects on the Verwey Transition in Fe3O4Physica Status Solidi (b), 1984
- Electron correlation theory of Fe3O4Philosophical Magazine Part B, 1980
- Electrical Conductivity in the Hubbard Model Including Electron-Phonon InteractionPhysica Status Solidi (b), 1977
- Calculation of the electrical conductivity above and below the Verwey transition in magnetitePhysica Status Solidi (b), 1975
- Multiple Ordering in MagnetitePhysical Review B, 1973
- High temperature Fe3O4 - a polaronic semiconductor?Solid State Communications, 1972
- Zur Theorie der Elektronenleitung im stöchiometrischen Fe3O4‐Kristall (Magnetit) oberhalb des Übergangspunktes Tü = 119,4°KPhysica Status Solidi (b), 1961
- Dielectric Spectroscopy of Ferromagnetic SemiconductorsReviews of Modern Physics, 1957