ARPES on and off the Nodal (IMAGE)

DOE/Lawrence Berkeley National Laboratory

ARPES on and off the Nodal

Caption

Part of the momentum map of Bi2212 derived from ultrafast laser ARPES shows that after initial excitation by a pump probe, how fast quasiparticles recombine into Cooper pairs greatly depends on their position in momentum space. (Only one of the four corners of the Fermi surface momentum map is shown, as insets in left panels.) Near the central nodes the quasiparticles recombine very slowly. Far from the nodes, they recombine quickly.

Credit

Lanzara Group, Lawrence Berkeley National Laboratory and University of California at Berkeley

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