Quantum Magnetic Deflagration inMn12Acetate

Magnetic deflagration in Gd5Ge4

S. Velez,1 J. M. Hernandez,1 A. Fernandez,1 F. Macià,1 C. Magen,2 P. A. Algarabel,3 J. Tejada,1 and E. M. Chudnovsky1,4 1Facultat de Física, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain 2Instituto de Nanociencia de Aragón-ARAID, Universidad de Zaragoza, 50009 Zaragoza, Spain 3Instituto de Ciencia de Materiales de Aragón and Departamento de Física de la Materia Condensada, Univ...

Magnetic Deflagration and Turbulent Fronts of Quantum Detonation in Molecular Magnets1

Spin tunneling in molecular magnets such as Mn-12, boosted by a strong transverse field, should result in quantum effects in magnetic burning or deflagration. As the dipolar field can block or unblock tunneling resonances, a new possibility of propagating fronts of spin flips opens up that coexists with the standard magnetic deflagration. Here this process is being considered within a full thre...

Propagation of avalanches in Mn12-acetate: magnetic deflagration.

Local time-resolved measurements of fast reversal of the magnetization of single crystals of Mn12-acetate indicate that the magnetization avalanche spreads as a narrow interface that propagates through the crystal at a constant velocity that is roughly 2 orders of magnitude smaller than the speed of sound. We argue that this phenomenon is closely analogous to the propagation of a flame front (d...

Deflagration to Detonation

Thermonuclear explosions of Type Ia supernovae (SNIa) involve turbulent deflagrations, detonations, and possibly a deflagration-to-detonation transition. A phenomenological delayed detonation model of SNIa successfully explains many observational properties of SNIa including monochromatic light curves, spectra, brightness – decline and color – decline relations. Observed variations among SNia a...

Deflagration with quantum and dipolar effects in a model of a molecular magnet