On the direction of the magnetic line and the circulating supercurrent of a vortex in type-II superconductors

The relationship between the direction of the magnetic line and the circulating supercurrent of a vortex in type-II superconductors is discussed. Contrary to the views presented in some articles, we will make it clear that the magnetic line and the circulating supercurrent of a vortex have a “right hand” relationship by considering basic electrodynamics and the lowest energy principle.