Fig. 3: Analysis of the temperature-dependent reflectivity transients (ΔR/R) after 1.0 eV photoexcitation. | Communications Physics

Fig. 3: Analysis of the temperature-dependent reflectivity transients (ΔR/R) after 1.0 eV photoexcitation.

From: Ultrafast signatures of spin and orbital order in antiferromagnetic α-Sr2CrO4

Fig. 3

a ΔR/R at time delays of 0.2 ps (black circles), 4 ps (red squares), and 100 ps (blue diamonds). b Transient reflectivity data at temperature T = 20 K (blue circles) and 120 K (purple circles) along with fits using bi-exponential decay functions (dashed lines). The temperature dependence of the (c) amplitude A1 and (d) decay time τ1 of the fast component extracted from our fits. The solid grey lines indicate the transition temperatures of the stripe-type order (TS), antiferro-type spin order (TN), and antiferro-type orbital order (TO), respectively. The error bars were calculated as described in Methods.

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