Fig. 4
From: All-optical nonequilibrium pathway to stabilising magnetic Weyl semimetals in pyrochlore iridates
Relaxation of nonthermal Weyl semimetal. a Time-dependent interaction relaxing back to the initial value, U(0 ≤ t ≤ 150 fs) = Ui − (Ui − Uq) sin(π·t/150 fs). b Corresponding time evolution of the magnetisation. As in the instantaneous case, the magnetisation is initially reduced before slowly relaxing back towards its initial value. The vertical solid lines indicate the probe times tp for which the tr-ARPES signals are shown in c–h, with a probe pulse duration σp = 20.6 fs indicated by the grey-shaded Gaussian envelope for one selected probe time. c–h Tr-ARPES signals at different probe times (indicated in b) along L − Γ. The solid lines correspond to the effective band structures of the time-dependent Hamiltonian averaged over the FWHM of the probe pulse
