“…2 | R(τ) for different magnetic fields and incident pump beam power.The film temperatures can be estimated for, , when neglecting the transfer of energy to the lattice over the duration of the pulse, where T 0 = 300 K is the initial temperature, C e = γT with γ = 665 J/(m 3 K 2 ) for bulk Co[65]. Similarly, the lattice temperature step increase after one pulse is T latt ≈ E pulse /( ℎ 0 2 ) ≈2.5 K. In addition, the heat accumulation temperature T acc cannot be neglected for thin samples and high-repetition rate lasers, with multiple pulses incident on the same area within the heat diffusion time 0 The maximum heat accumulation is T acc,max = 310 K for P abs = 40 mW, h = 4.1 nm, w 0 = 125 μm, an interface conductance G > 10 6 W/m 2 K and the same thermal parameters as in Ref [108]…”