Magnetic field dependence of most stable vortex states in the chiral helimagnet / superconductor bilayer system

29th International Symposium on Superconductivity

Fukui, S.^1 ; Kato, M.^1 ; Togawa, Y.^2

Department of Mathematical Sciences, Osaka Prefecture University, 1-1, Gakuencho, Nakaku, Sakai, Osaka

599-8531, Japan^1

Department of Physics and Electronics, Osaka Prefecture University, 1-1, Gakuencho, Nakaku, Sakai, Osaka

599-8531, Japan^2

关键词: Bilayer systems;    External magnetic field;    Ginzburg-Landau equations;    Ginzburg-Landau free energy;    Magnetic field dependences;    Stable vortex;    Vortex configurations;    Vortex state;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/871/1/012026/pdf
DOI  :  10.1088/1742-6596/871/1/012026

来源: IOP

【 摘 要 】

We have studied vortex states in chiral helimagnet / superconductor bilayer systems. An effect of a chiral helimagnet on a superconductor is taken as an external magnetic field. Solving the Ginzburg-Landau equations, we obtain various vortex configurations. In order to find a stable vortex state, we compare the Ginzburg-Landau free energies of these states. Under the large magnetic field from the chiral helimagnet, the state in which vortices appear in a row becomes more stable.