Figure 2

Imaging monopole motion. (a) The raw absorption image for the 400 nm lattice spacing sample and (b) a schematic of the initial, pure T₂, diagonally field-polarised state. (c) A difference image where three islands have reversed and (d) the schematic of the corresponding injected monopole-antimonopole (T₃) pair indicated with a red and blue circle at the ends of the string of reversed islands (T₁ vertices) in black. (e) The next consecutive difference image where another island has reversed and (f) the cumulative motion of the monopole-antimonopole pair, schematically showing the creation of an additional T₁ vertex and growth of the Nambu string.