Vortex ice pattern evolution in a kagome nanostructured superconductor

Chen, Xing-Hong; He, Xiu-De; Zhang, An-Lei; Moshchalkov, Victor; Ge, Jun‐Yi

doi:10.1103/physrevb.102.054516

Cited by 1 publication

(1 citation statement)

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“…In addition to studies in magnetic ASI systems, there are several particle-based realizations of ASI 17 , where a collection of interacting particles is coupled to some form of substrate to create states that obey the ice rules. Such systems have been studied for colloidal particles coupled to ordered substrates [18][19][20][21][22] , magnetic skyrmions 23 , and vortices in type-II superconductors with nanostructured pinning arrays [24][25][26][27][28][29][30] . The ice rule obeying states often arise through different mechanisms in the particle-based systems compared to magnetic ice systems, since the particle ices minimize Coulomb energy rather than vertex energy 21,31 .…”

Section: Introductionmentioning

confidence: 99%

Vortex ordering and dynamics on Santa Fe artificial ice pinning arrays

Reichhardt

Jankó

et al. 2021

Applied Physics Letters

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We numerically examine the ordering, pinning and flow of superconducting vortices interacting with a Santa Fe artificial ice pinning array. We find that as a function of magnetic field and pinning density, a wide variety of vortex states occur, including ice rule obeying states and labyrinthine patterns. In contrast to square pinning arrays, we find no sharp peaks in the critical current due to the inherent frustration effect imposed by the Santa Fe ice geometry; however, there are some smoothed peaks when the number of vortices matches the number of pinning sites. For some fillings, the Santa Fe array exhibits stronger pinning than the square array due to the suppression of one-dimensional flow channels when the vortex motion in the Santa Fe lattice occurs through the formation of both longitudinal and transverse flow channels.

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