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- W4286750249 abstract "Abstract While the dynamics of dimers and polymer chains in a viscous solvent is well understood within the celebrated Rouse model, the effect of an external magnetic field on the dynamics of a charged chain is much less understood. Here, we generalize the Rouse model for a charged dimer to include the effect of an external magnetic field. Our analytically solvable model allows a fundamental insight into the magneto-generated dynamics of the dimer in the overdamped limit as induced by the Lorentz force. Surprisingly, for a dimer of oppositely charged particles, we find an enormous enhancement of the dynamics of the dimer center, which exhibits even a transient superballistic behavior. This is highly unusual in an overdamped system for there is neither inertia nor any internal or external driving. We attribute this to a significant translation and rotation coupling due to the Lorentz force. We also find that magnetic field reduces the mobility of a dimer along its orientation and its effective rotational diffusion coefficient. In principle, our predictions can be tested by experiments with colloidal particles and complex plasmas." @default.
- W4286750249 created "2022-07-23" @default.
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- W4286750249 date "2022-07-01" @default.
- W4286750249 modified "2023-10-14" @default.
- W4286750249 title "Strongly enhanced dynamics of a charged Rouse dimer by an external magnetic field" @default.
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- W4286750249 doi "https://doi.org/10.1093/pnasnexus/pgac119" @default.
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