Figure 3: Topological characterization of the 4-terminal junction for the multi-channel case.
From: Multi-terminal Josephson junctions as topological matter
Chern number as a function of ϕ3 for a multi-channel 4-terminal junction, where the contacts 1, 2, 3, and 0 contain 12, 11, 10, and 9 channels, respectively. In this particular example, the junction hosts 36 Weyl points.
