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arXiv · 1605.05467

Effects of chiral helimagnets on vortex states in a superconductor

Saoto Fukui·Masaru Kato·Yoshihiko Togawa
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Abstract

We have investigated vortex states in chiral helimagnet/superconductor bilayer systems under an applied external magnetic field Happl, using the Ginzburg-Landau equations. Effect of the chiral helimagnet on the superconductor is taken as a magnetic field HCHM, which is perpendicular to the superconductor and oscillates spatially. For Happl = 0 and weak HCHM, there appear pairs of up-and down-vortices. Increasing Happl, down-vortices gradually disappear, and number of up-vortices increases in the large magnetic field region. Then, up-vortices form parallel, triangular, or square structures.

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Saoto Fukui, Masaru Kato, Yoshihiko Togawa. 2016-05-18. Effects of chiral helimagnets on vortex states in a superconductor. https://doi.org/10.1088/0953-2048%2F29%2F12%2F125008

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