Dynamic fluctuations of dipolar semiflexible filaments

6533b851fe1ef96bd12a97ed

RESEARCH PRODUCT

Dynamic fluctuations of dipolar semiflexible filaments

subject

Protein filament Physics Dipole Magnetization Condensed matter physics Thermal fluctuations Bending Magnetic susceptibility Excitation Magnetic field

description

On the basis of the model of a flexible magnetic filament, the characteristics of their thermal fluctuations are considered. The crossover of the time dependence of the mean quadratic displacement from t(3/4) to t(1/2) at the magnetic field increase is found. Two characteristic mechanisms of the magnetization relaxation time distribution--straightening of the thermal undulations and excitation of the bending modes of the free ends under the action of an ac magnetic field--are described. In both cases, the characteristic scaling law omega(-3/4) of the magnetic susceptibility in a high-frequency range is found.

year	journal	country	edition	language
2005-11-09	Physical Review E

https://doi.org/10.1103/physreve.73.021507

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