Abstract
The process of spin diffusion within the double-exchange model is studied on a Bethe lattice in infinite dimension at (Formula presented) In the absence of electron hopping, the spin-current correlation function oscillates with a period inversely proportional to the Hund’s coupling and the spin-diffusion coefficient D vanishes. Electron hopping causes the correlation function to decay with time and yields a value for D proportional to the electron bandwidth.
| Original language | English |
|---|---|
| Pages (from-to) | R3600-R3603 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 62 |
| Issue number | 6 |
| DOIs | |
| State | Published - 2000 |