Laser-induced terahertz spin transport in magnetic nanostructures arises from the same force as ultrafast demagnetization

• Main Authors: Rouzegar, R, Brandt, L, Nadvornik, L, Reiss, D. A, Chekhov, A. L, Gueckstock, O, In, C, Wolf, M, Seifert, T. S, Brouwer, P. W, Woltersdorf, G, Kampfrath, T
• Format: Journal Article
• Language: English
• Published: 22.03.2021
• Subjects: Physics - Mesoscale and Nanoscale Physics

Laser-induced terahertz spin transport (TST) and ultrafast demagnetization (UDM) are central but so far disconnected phenomena in femtomagnetism and terahertz spintronics. Here, we use broadband terahertz emission spectroscopy to reliably measure both processes in one setup. We find that the rate of...