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Title: Geometric frustration of colloidal dimers on a honeycomb magnetic lattice
Author: Tierno, Pietro
Keywords: Cristalls moleculars
Molecular crystals
Issue Date: 22-Jan-2016
Publisher: American Physical Society
Abstract: We study the phase behavior and the collective dynamics of interacting paramagnetic colloids assembled above a honeycomb lattice of triangular shaped magnetic minima. A frustrated colloidal molecular crystal is realized when filling these potential minima with exactly two particles per pinning site. External in-plane rotating fields are used to anneal the system into different phases, including long range ordered stripes, random fully packed loops, labyrinth and disordered states. At a higher amplitude of the annealing field, the dimer lattice displays a two-step melting transition where the initially immobile dimers perform first localized rotations and later break up by exchanging particles across consecutive lattice minima.
Note: Reproducció del document publicat a:
It is part of: Physical Review Letters, 2016, vol. 116, p. 038303-1-038303-5
Related resource:
ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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