More Evidence for a Distribution of Tunnel Splittings in Mn$_{12}$-acetate

Details More Evidence for a Distribution of Tunnel Splittings in Mn$_{12}$-acetate More Evidence for a Distribution of Tunnel Splittings in Mn$_{12}$-acetate

2002-09-04

arxiv.org/abs/cond-mat/0209110v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

minor corrections (PACS nos, signs in Fig. 2)

Scientific paper

10.1063/1.1543857

In magnetic fields applied parallel to the anisotropy axis, the magnetization of Mn$_{12}$ has been measured in response to a field that is swept back and forth across the resonances corresponding to steps $N=4,5,...9$. The fraction of molecules remaining in the metastable well after each sweep through the resonance is inconsistent with expectations for an ensemble of identical molecules. The data are consistent instead with the presence of a broad distribution of tunnel splittings. A very good fit is obtained for a Gaussian distribution of the second-order anisotropy tunneling parameter $X_E=-\ln(\mid E\mid/2D)$. We show that dipolar shuffling is a negligible effect which cannot explain our data.

Affiliated with

Also associated with

No associations

Rating

More Evidence for a Distribution of Tunnel Splittings in Mn$_{12}$-acetate 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 More Evidence for a Distribution of Tunnel Splittings in Mn$_{12}$-acetate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and More Evidence for a Distribution of Tunnel Splittings in Mn$_{12}$-acetate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-620419