Abstract
The transport properties of the ferromagnetic Kondo lattice model in one dimension are studied via bosonization methods. The antiferromagnetic fluctuations, which normally appear because of the Ruderman-Kittel-Kasuya-Yosida interactions, are explicitly taken into account as a direct exchange between the ''core" spins. It is shown that in the paramagnetic regime with the local antiferromagnetic fluctuations, the resistivity decays exponentially as the temperature increases while in the ferromagnetic regime the system is an almost perfect conductor. The effect of a weak applied field is discussed to be reduced to the case of the ferromagnetic state leading to band splitting. The qualitative relevance of the results for the problem of the oxide manganites is emphasized. [S0163-1829(99)03301-9].
| Original language | English |
|---|---|
| Pages (from-to) | 529-532 |
| Number of pages | 4 |
| Journal | Physical Review. B, Condensed matter and materials physics |
| Volume | 59 |
| Publication status | Published - 1 Jan 1999 |
Keywords
- COLOSSAL-MAGNETORESISTANCE
- BOSONIZATION APPROACH
- PHASE-DIAGRAM
- GROUND-STATE
- SYSTEMS