7-10 September 2020
Europe/Zurich timezone
20. konference českých a slovenských fyziků

TIME‐RESOLVED OPTICAL AND TERAHERTZ STUDIES OF THIN‐FILM FERROMAGNETS AND ANTIFERROMAGNETS

7 Sep 2020, 17:10
35m
lecture hall N1 (IMPAKT)

lecture hall N1

IMPAKT

Speaker

Nádvorník L. (Faculty of Mathematics and Physics, Charles University, Prague)

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.

Presentation Materials

There are no materials yet.