Extended Data Fig. 2: Rocking curve, magnetic hysteresis and optical penetration depth.
From: Polarized phonons carry angular momentum in ultrafast demagnetization
a, Rocking scan data obtained with the femtosecond electron beam. Shown is the Ni(200) peak when rotating the specimen around the [010] axis. b, Magnetic hysteresis curve of our nickel specimen, obtained by an in-plane SQUID measurement. c, Simulated optical energy disposition as a function of penetration depth. Upper panel: solid line, normalized electric field amplitude; dotted line, real part of the refractive index; dashed line, imaginary part of the refractive index. The laser comes from the left. Lower panel: absorption as a function of depth. The green, red, blue and grey areas denote nickel, copper, silicon and NiOx, respectively.
