Efficient magnetic switching in a correlated spin glass

• Authors: KREMPASKY Juraj; SPRINGHOLZ Gunther; SOUZA Sunil Wilfred; CAHA Ondřej; GMITRA Martin; NEY Andreas; VAZ C. A. F.; PIAMONTEZE Cinthia; FANCIULLI Mauro; KRIEGNER Dominik; KRIEGER Jonas A.; PROKSCHA Thomas; SALMAN Zaher; MINAR Jan; DIL J. Hugo
• Year of publication: 2023
• Type: Article in Periodical
• Magazine / Source: Nature Communications
• MU Faculty or unit: Faculty of Science
• Web: https://www.nature.com/articles/s41467-023-41718-4
• Doi: http://dx.doi.org/10.1038/s41467-023-41718-4
• Keywords: RAY CIRCULAR-DICHROISM; ENERGY; GETE; STATES; FIELD
• Description: 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 spin-orbit 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.