Seminar on 25 March 2021

RNDr. Lukáš Nádvorník, Ph.D.
Department of Chemical Physics and Optics, FMP, Charles University
Terahertz spintronics in MAGNETICALLY ORDERED METALS
at 13:00 as an online webinar
Contact K. Carva for the online access information.

After the recent progress in fields of ultrafast demagnetization and generation of intense terahertz (THz) pulses [1, 2], the THz time-domain spectroscopy (TDTS) has found its way to explore ultrafast spintronic phenomena. By covering energies from 0.4 to 200 meV, it complements optical pump-probe techniques by resonant probing of various excitations in solid states, such as electron scattering rate, spin-orbit interaction or antiferromagnetic resonance. In this talk, we will show how TDTS can provide new insight into well established spintronic phenomena like anisotropic and spin-Hall magnetoresistance [3], ultrafast demagnetization and ultrafast spin currents [4], or spin Hall and Seebeck effects [5,6,7].

[1] T. Seifert et al., Nature Phot. 10, 483 (2016).
[2] P. Němec et al., Nature Physics 14, 229 (2018).
[3] L. Nádvorník et al., arXiv:2010.06280 (2020).
[4] D. Yagodkin, 2D Mater. 8, 025012 (2021).
[5] L. Nádvorník et al., Scientific Reports 6, 22901 (2016).
[6] T. Seifert et al., Nature Communications 9, 2899 (2018).
[7] O. Gueckstock et al., Adv. Mater. 2006281 (2021).