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APS » Journals » Phys. Rev. B » Volume 79 » Issue 9
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Phys. Rev. B 79, 092403 (2009) [4 pages]

Effects of quantum mechanics on the deflagration threshold in the molecular magnet Mn12 acetate

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F. Macià1, J. M. Hernandez1, J. Tejada1, S. Datta2, S. Hill2, C. Lampropoulos3, and G. Christou3
1Departament de Física Fonamental, Facultat de Física, Universitat de Barcelona, Avinguda Diagonal 647, Planta 4, Edifici nou, 08028 Barcelona, Spain
2Department of Physics, University of Florida, Gainesville, Florida 32611, USA
3Department of Chemistry, University of Florida, Gainesville, Florida 32611, USA

Received 22 January 2009; published 12 March 2009

We report experimental studies of the stability of a Mn12-Ac crystal against magnetic avalanches as a function of the magnitude and direction of the magnetic field, as well as a function of temperature. Strong evidence for quantum effects associated with this phenomenon is seen in the (Hz,Hx) metastability diagram. The data provide further support to the theory of magnetic deflagration.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.79.092403
DOI:
10.1103/PhysRevB.79.092403
PACS:
75.50.Xx, 45.70.Ht, 76.60.Es, 82.33.Vx
 
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