Speaker
Description
Recent breakthroughs in electrical detection and manipulation of antiferromagnets have
opened a new avenue in the research of non-volatile spintronic devices. Antiparallel spins in
antiferromagnets lead to the insensitivity to magnetic field perturbations, multi-level stability
and ultra-fast spin dynamics, which is also a major experimental challenge [1]. In this
contribution we show how the know-how that we achieved in the pump-probe study of spin
transport in non-magnetic heterostructures AlGaAs/GaAs [2], diluted ferromagnetic
semiconductor (Ga,Mn)As [3] or terahertz magneto-resistance [4] can be transferred to the
research of antiferromagnetic metal CuMnAs. In particular, we show the latest progress in
studies of magnetic anisotropy [5], dynamics of heat dissipation [6] and even switching of
memory devices by single femtosecond laser pulse [7] or terahertz excitation [8].
[1] P. Němec et al., Nature Physics 14, 229 (2018)
[2] L. Nádvorník et al., Scientific Reports 6, 22901 (2016).
[3] P. Němec et al., Nature Physics 8, 411 (2012)
[4] L. Nádvorník et al., submitted to Nature Communications.
[5] V. Saidl, et al., Nature Photonics 11, 91 (2017)
[6] M. Surýnek et al., J. Appl. Phys. 127, 233904 (2020)
[7] Z. Kašpar et al., arXiv 1909.09071
[8] J. Heitz et al., submitted to Nano Letters.