Efficient magnetic switching in a correlated spin glass

Juraj Krempaský (), Gunther Springholz, Sunil Wilfred D’Souza, Ondřej Caha, Martin Gmitra, Andreas Ney, C. A. F. Vaz, Cinthia Piamonteze, Mauro Fanciulli, Dominik Kriegner, Jonas A. Krieger, Thomas Prokscha, Zaher Salman, Jan Minár () and J. Hugo Dil ()
Additional contact information
Juraj Krempaský: Paul Scherrer Institut
Gunther Springholz: Johannes Kepler Universität
Sunil Wilfred D’Souza: New Technologies-Research Center University of West Bohemia
Ondřej Caha: Masaryk University
Martin Gmitra: P. J. Šafárik University in Košice
Andreas Ney: Johannes Kepler Universität
C. A. F. Vaz: Paul Scherrer Institut
Cinthia Piamonteze: Paul Scherrer Institut
Mauro Fanciulli: LPMS, CY Cergy Paris Université
Dominik Kriegner: Institute of Physics ASCR, v.v.i.
Jonas A. Krieger: Paul Scherrer Institute
Thomas Prokscha: Paul Scherrer Institute
Zaher Salman: Paul Scherrer Institute
Jan Minár: New Technologies-Research Center University of West Bohemia
J. Hugo Dil: Paul Scherrer Institut

Nature Communications, 2023, vol. 14, issue 1, 1-11

Abstract: Abstract 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.

Date: 2023
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DOI: 10.1038/s41467-023-41718-4

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