Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1999-01-11
Phys. Rev. B 59, 8375 (1999)
Physics
Condensed Matter
Strongly Correlated Electrons
RevTex, 4 pages, 4 PostScript figures, To appear in Phys. Rev. B
Scientific paper
10.1103/PhysRevB.59.8375
The resistivity around the ferromagnetic transition temperature in the double exchange model is studied by the Schwinger boson approach. The spatial spin correlation responsible for scattering of conduction electrons are taken into account by adopting the memory function formalism. Although the correlation shows a peak lower than the transition temperature, the resistivity in the ferromagnetic state monotonically increases with increasing temperature due to a variation of the electronic state of the conduction electron. In the paramagnetic state, the resistivity is dominated by the short range correlation of scattering and is almost independent of the temperature. It is attributed to a cancellation between the nearest-neighbor spin correlation, the fermion bandwidth, and the fermion kinetic energy. This result implies the importance of the temperature dependence of the electronic states of the conduction electron as well as the localized spin states in both ferromagnetic and paramagnetic phases.
Ishihara Sumio
Ishizaka Satoshi
No associations
LandOfFree
Temperature dependence of the resistivity in the double-exchange model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Temperature dependence of the resistivity in the double-exchange model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature dependence of the resistivity in the double-exchange model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-62530