Nobel Lecture: Type-II superconductors and the vortex lattice^*

Figure 1

The dots correspond to zeros of the order parameter (square lattice). The dashed lines are the branch cuts introduced in order to make the phase single valued. The gradient of the phase has a discontinuity at every branch cut (see text).

Figure 2

The lines of current coinciding with the lines of constant $\mid \Psi \mid$ for a square lattice.

Figure 3

Plot of the magnetic field (solid line) and $\mid \Psi \mid$ in a vortex.

Figure 4

Dependence of magnetization on magnetic field for different values of $\kappa$.

Figure 5

First decoration picture of vortices by 12.

Figure 6

Vortices in ${\mathrm{NbSe}}_2$ defined by scanning tunneling microscopy (STM).