Dotriacontapoles : almost self-assembled

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Hartung, Stefan ; Sommer, Felix ; Völkel, Simeon ; Schönke, Johannes ; Rehberg, Ingo:
Dotriacontapoles : almost self-assembled.
Ithaca, NY : Cornell University , 2018 . - 5 S.

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Abstract

The magnetic field of a cuboidal cluster of eight magnetic spheres is measured. It decays with the inverse seventh power of the distance. This corresponds formally to a hitherto unheard-of multipole, namely a dotriacontapole. This strong decay is explained on the basis of dipole-dipole interaction and the symmetry of the ensuing ground state of the cuboidal cluster. A method to build such dotriacontapoles is provided.