ausblenden:
Schlagwörter:
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Zusammenfassung:
Superparamagnetic colloidal particles confined to a flat horizontal air-water interface in an external magnetic
field, which is tilted relative to the interface, form anisotropic two-dimensional crystals resulting from their
mutual dipole-dipole interactions. Using real-space experiments and harmonic lattice theory we explore the
mean-square displacements of the particles in the directions parallel and perpendicular to the in-plane component of the external magnetic field as a function of the tilt angle. We find that the anisotropy of the mean-square
displacement behaves nonmonotonically as a function of the tilt angle and does not correlate with the structural
anisotropy of the crystal.
