We theoretically study the vortex states in superconducting multilayers of Nb/NbTi and Nb/NbZr. We solve the Ginzburg-Landau equations numerically and find two different vortex lattices as equilibrium vortex phases. From the free energy calculations, we determine the phase boundary between the vortex phases and map a phase diagram. The magnetization curve exhibits a jump at the phase boundary.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering