Vortex states in a superconductor under a helical magnetic field

International Conference on Strongly Correlated Electron Systems 2016

Fukui, Saoto^1 ; Kato, Masaru^1 ; Togawa, Yoshihiko^2

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

599-8531, Japan^1

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

599-8531, Japan^2

关键词: Applied magnetic fields;    Bilayer systems;    Ginzburg-Landau equations;    Oscillating magnetic fields;    Stable vortex;    Two-dimensional superconductors;    Vortex state;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/807/5/052010/pdf
DOI  :  10.1088/1742-6596/807/5/052010

来源: IOP

【 摘 要 】

We have studied vortex states in a chiral helimagnet / superconductor bilayer system numerically. We consider a two-dimensional superconductor subsystem. An effect of a chiral helimagnet on a superconductor is taken as a magnetic field, which oscillates spatially. Solving the Ginzburg-Landau equations, we obtain various vortex states. Comparing free energies, we find the most stable vortex states under only the oscillating magnetic field HCHMand under the HCHMand the homogeneous applied magnetic field Happl.