Journal
SOFT MATTER
Volume 16, Issue 13, Pages 3338-3343Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9sm02312g
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Funding
- U.S. Department of Energy through the LANL/LDRD program
- NNSA of the U.S. DoE at LANL [DE-AC52-06NA25396]
- LANL/LDRD program
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Using continuum based simulations we show that a rich variety of skyrmion liquid crystal states can be realized in the presence of a periodic obstacle array. As a function of the number of skyrmions per obstacle we find hexagonal, square, dimer, trimer and quadrimer ordering, where the n-mer structures are a realization of a molecular crystal state of skyrmions. As a function of external field and obstacle radius we show that there are transitions between the different crystalline states as well as mixed and disordered structures. We discuss how these states are related to commensurate effects seen in other systems, such as vortices in type-II superconductors and colloids interacting with two dimensional substrates.
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