Extended Data Fig. 3: Threshold fluence as a function of Cu thickness.
From: Optically induced ultrafast magnetization switching in ferromagnetic spin valves
a Threshold incident fluence as a function of Cu thickness tCu. Opened (closed) symbols correspond to results obtained with an angle of incidence of 45° (0°). The error bars show the standard error of fitting the equation shown in Methods to the experimentally obtained domain radius (area) versus the energy of laser pulse. b Calculated energy absorption in the free layer as a function of tCu for angles of incidence of 0° and 45°. c Threshold absorbed fluences obtained by multiplying a and b.
