Abstract
The effect of magnetoelastic dissipation upon the tunneling and coherence of the total magnetization in small (1/4100 A) single-domain ferromagnetic particles is investigated. Such tunneling would be an example of a macroscopic quantum phenomenon. It is shown that the dissipation has a super-Ohmic spectral density, J()1/43, and that the dissipation is weak for reasonable material parameters. Corrections to the rates, and the damping rate for coherent oscillations are obtained. A key feature is the inclusion of the elastic waves in the medium surrounding the particle.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2512-2515 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 63 |
| Issue number | 22 |
| DOIs | |
| State | Published - Jan 1 1989 |
ASJC Scopus subject areas
- Physics and Astronomy(all)