Striped twisted state in the orientational epitaxy on quasicrystals
arXiv:2501.06851 · doi:10.1103/PhysRevLett.134.066202
Abstract
The optimal "twisted" geometry of a crystalline layer on a crystal is long known, but that on a quasicrystal is still unknown and open. We predict analytically that the layer equilibrium configuration will generally exhibit a nonzero misfit angle. The theory perfectly agrees with numerical optimization of a colloid monolayer on a quasiperiodic decagonal optical lattice. Strikingly different from crystal-on-crystal epitaxy, the structure of the novel emerging twisted state exhibits an unexpected stripe pattern. Its high anisotropy should reflect on the tribomechanical properties of this unconventional interface.
arXiv comment6 pages, 4 figures + Supplemental Material (16 pages, 11 figures)
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