Magnetic-domain-controlled vortex pinning in a superconductor/ferromagnet bilayer
Abstract
Vortex pinning in a type-II superconducting Pb film covering a Co/Pt multilayer with perpendicular magnetic anisotropy is investigated. Different stable magnetic-domain patterns like band and bubble domains can be created in the Co/Pt multilayer, clearly influencing the vortex pinning in the superconducting Pb layer. The most effective pinning is observed for the bubble domain state. We demonstrate that the pinning properties of the superconductor/ferromagnet bilayer can be controlled by tuning the size, density, and magnetization direction of the bubbles.
- Publication:
-
Applied Physics Letters
- Pub Date:
- July 2002
- DOI:
- 10.1063/1.1492317
- arXiv:
- arXiv:cond-mat/0205470
- Bibcode:
- 2002ApPhL..81..322L
- Keywords:
-
- lead;
- type II superconductors;
- superconducting thin films;
- cobalt;
- platinum;
- magnetic multilayers;
- perpendicular magnetic anisotropy;
- magnetic bubbles;
- flux pinning;
- Anisotropy;
- Bubble Memory Devices;
- Cobalt;
- Flux Pinning;
- High Temperature Superconductors;
- Lead (Metal);
- Magnetic Domains;
- Magnetic Materials;
- Magnetic Moments;
- Magnetic Properties;
- Platinum;
- Superconducting Films;
- Superconductivity;
- Superconductors (Materials);
- Thin Films;
- 74.70.Ad;
- 74.76.Db;
- 74.50.+r;
- 75.70.Cn;
- 74.60.Ge;
- 75.70.Kw;
- 75.30.Gw;
- Solid-State Physics;
- Metals;
- alloys and binary compounds;
- Tunneling phenomena;
- point contacts weak links Josephson effects;
- Magnetic properties of interfaces;
- Domain structure;
- Magnetic anisotropy;
- Condensed Matter - Superconductivity
- E-Print:
- 4 pages, 3 figures, accepted for APL