Tunneling and EPR linewidths due to dislocations in Mn-12 acetate

Details Tunneling and EPR linewidths due to dislocations in Mn-12 acetate Tunneling and EPR linewidths due to dislocations in Mn-12 acetate

2001-07-29

arxiv.org/abs/cond-mat/0107586v2

Eur. Phys. J. B 29, 3-7 (2002)

Physics

Condensed Matter

Statistical Mechanics

5 pages, 3 figures, submitted to EPJB

Scientific paper

10.1140/epjb/e2002-00254-2

We compute the width and shape of the EPR and tunneling resonances due to
dislocations in Mn-12 acetate crystals. Uncorrelated dislocations produce the
Gaussian shape of resonances while dislocations bound in pairs produce the
Lorentzian shape. We stress that the uniaxial spin Hamiltonian together with
crystal defects can explain the totality of experimental data on Mn-12.

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