Abstract
The average fourfold symmetry of magnetic quantum tunneling (MQT) in Mn12-acerate was studied and found to be due to equal populations of isomers with biaxial anisotropy that have orthogonal medium magnetic axes. Measurements of the tunneling probability versus transverse field showed evidence for Berry phase effects probably due to a combination of second and fourth order transverse magnetic anisotropies. The results illustrate how subtle changes in the molecule environment can modulate magnetic anisotropy and magnetic quantum tunneling.
| Original language | English (US) |
|---|---|
| Article number | 047203 |
| Pages (from-to) | 047203/1-047203/4 |
| Journal | Physical Review Letters |
| Volume | 91 |
| Issue number | 4 |
| State | Published - Jul 25 2003 |
ASJC Scopus subject areas
- Physics and Astronomy(all)
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Del Barco, E., Kent, A. D., Rumberger, E. M., Hendrickson, D. N., & Christou, G. (2003). Symmetry of magnetic quantum tunneling in single molecule magnet Mn12-acetate. Physical Review Letters, 91(4), 047203/1-047203/4. [047203].