Clustering transitions in vibro-fluidized magnetized granular materials

Preprint

25 July 2002

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0203488

Abstract

We study the effects of long range interactions on the phases observed in cohesive granular materials. At high vibration amplitudes, a gas of magnetized particles is observed with velocity distributions similar to non-magnetized particles. Below a transition temperature compact clusters are observed to form and coexist with single particles. The cluster growth rate is consistent with a classical nucleation process. However, the temperature of the particles in the clusters is significantly lower than the surrounding gas, indicating a breakdown of equipartition. If the system is quenched to low temperatures, a meta-stable network of connected chains self-assemble due to the anisotropic nature of magnetic interactions between particles.

Keywords

All Related Versions

Version 1, 2002-03-23, ArXiv
Version 2, 2002-07-25, ArXiv
Published version: Physical Review E, 67 (2), 021302.

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