Fig. 3: Temporal change of interaction channels [Ges (electron-spin interactio channel), Gel (electron-lattice interactio channel), and Gls (lattice-spin interactio channel)] and the exchange stiffness.
From: Ultrafast dynamics of exchange stiffness in Co/Pt multilayer
a 3D map of Ges vs Ts (spin temperature) and Te (electron temperature). Dark gray line: trajectory of Ges at 9.9 mJ cm−2 for -1 to 0.3 ps. b Ges vs Ts for -1 to 0.3 ps at 1.7 ≤ FP (pump fluence) ≤ 9.9 mJ cm−2 (wavelength of pump pulse λpump = 800 nm). Black dashed line: Te = Ts. c Ges vs. the delay time (t) between -1 to 3 ps at 1.7 ≤ FP ≤ 9.9 mJ cm−2 (λpump = 800 nm). Vertical dashed line: t = 0.3 ps. d Interaction channels (Ges, Gel, and Gls) vs FP at t = 0.3 ps for the case of 800 and 400-nm λpump. Error bars represent that lowest standard error region (<5%) during each fitting parameter by G-3TM. Ges is not fitting paramert in G-3TM. e Ges/Gls vs FP at t = 0.3 ps for the case of 800 and 400-nm λpump. Error bars represent that lowest standard error region (<5%) during each fitting parameter by G-3TM.
