Self-organized patterns of macroscopic quantum tunneling in molecular magnets

D. A. Garanin; E. M. Chudnovsky

doi:10.1103/physrevlett.102.097206

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arXiv · 0903.2247

Self-organized patterns of macroscopic quantum tunneling in molecular magnets

D. A. Garanin·E. M. Chudnovsky

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Abstract

We study low temperature resonant spin tunneling in molecular magnets induced by a field sweep with account of dipole-dipole interactions. Numerical simulations uncovered formation of self-organized patterns of the magnetization and of the ensuing dipolar field that provide resonant condition inside a finite volume of the crystal. This effect is robust with respect to disorder and should be relevant to the dynamics of the magnetization steps observed in molecular magnets.

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D. A. Garanin, E. M. Chudnovsky. 2009-03-12. Self-organized patterns of macroscopic quantum tunneling in molecular magnets. https://doi.org/10.1103/physrevlett.102.097206

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