Excess Spin and the Dynamics of Antiferromagnetic Ferritin

Details Excess Spin and the Dynamics of Antiferromagnetic Ferritin Excess Spin and the Dynamics of Antiferromagnetic Ferritin

1999-04-03

arxiv.org/abs/cond-mat/9904051v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 Postsript figures, 1 table. Submitted to PRB

Scientific paper

10.1103/PhysRevB.60.3453

Temperature-dependent magnetization measurements on a series of synthetic ferritin proteins containing from 100 to 3000 Fe(III) ions are used to determine the uncompensated moment of these antiferromagnetic particles. The results are compared with recent theories of macroscopic quantum coherence which explicitly include the effect of this excess moment. The scaling of the excess moment with protein size is consistent with a simple model of finite size effects and sublattice noncompensation.

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