Efficient magnetic switching in a correlated spin glass

0576646 - FZÚ 2024 RIV US eng J - Journal Article
Krempasky, J. - Springholz, G. - D'Souza, S.W. - Caha, O. - Gmitra, M. - Ney, A. - Vaz, C. A. F. - Piamonteze, C. - Fanciulli, M. - Kriegner, Dominik - Krieger, J.A. - Prokscha, T. - Salman, Z. - Minár, J. - Dil, J.H.
Efficient magnetic switching in a correlated spin glass.
Nature Communications. Roč. 14, č. 1 (2023), č. článku 6127. E-ISSN 2041-1723
Grant - others:AV ČR(CZ) LQ100102201
Program: Prémie Lumina quaeruntur
Institutional support: RVO:68378271
Keywords : spintronics * spin glass * ferrimagnet * X-ray magnetic circular dichroism
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 16.6, year: 2022
Method of publishing: Open access

The interplay between spin-orbit interaction and magnetic order is one of the most active research fields in condensed matter physics and drives the search for materials with novel, and tunable, magnetic and spin properties. Here we report on a variety of unique and unexpected observations in thin multiferroic Ge1−xMnxTe films. The ferrimagnetic order parameter in this ferroelectric semiconductor is found to switch direction under magnetostochastic resonance with current pulses many orders of magnitude lower as for typical spinorbit torque systems. Upon a switching event, the magnetic order spreads coherently and collectively over macroscopic distances through a correlated spin-glass state. Utilizing these observations, we apply a novel methodology to controllably harness this stochastic magnetization dynamics.
Permanent Link: https://hdl.handle.net/11104/0349732