Thermally superactive nanomagnets obtained with interfacial Dzyaloshinskii-Moriya interaction

Kevin Hofhuis; Aleš Hrabec; Hanu Arava; Naëmi Leo; Yen-Lin Huang; Rajesh Chopdekar; Sergii Parchenko; Armin Kleibert; Sabri Koraltan; Claas Abert; Christoph Vogler; Dieter Suess; Peter M. Derlet; Laura J. Heyderman

doi:10.1117/12.2596033

1 August 2021 Thermally superactive nanomagnets obtained with interfacial Dzyaloshinskii-Moriya interaction

Kevin Hofhuis, Aleš Hrabec, Hanu Arava, Naëmi Leo, Yen-Lin Huang, Rajesh Chopdekar, Sergii Parchenko, Armin Kleibert, Sabri Koraltan, Claas Abert, Christoph Vogler, Dieter Suess, Peter M. Derlet, Laura J. Heyderman

Author Affiliations +

Proceedings Volume 11805, Spintronics XIV; 1180516 (2021) https://doi.org/10.1117/12.2596033
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Abstract

The lowest achievable blocking temperature limits magnetic ordering in highly frustrated thermally active artificial kagome spin ice. By exploiting the interfacial Dzyaloshinskii-Moriya interaction, we can lower the blocking temperature of individual nanomagnets without strongly affecting their magnetic moments, thus leaving the critical transition temperatures unchanged. Using this approach, we demonstrate that a seven-ring kagome structure consisting of 30 nanomagnets can be thermally annealed into its ground state. Furthermore, the spin-ice correlations extracted from extended kagome lattices are found to exhibit the quantitative signatures of long-range charge-order, thereby giving experimental evidence for the theoretically predicted continuous transition to a charge-ordered state.

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Kevin Hofhuis, Aleš Hrabec, Hanu Arava, Naëmi Leo, Yen-Lin Huang, Rajesh Chopdekar, Sergii Parchenko, Armin Kleibert, Sabri Koraltan, Claas Abert, Christoph Vogler, Dieter Suess, Peter M. Derlet, and Laura J. Heyderman "Thermally superactive nanomagnets obtained with interfacial Dzyaloshinskii-Moriya interaction", Proc. SPIE 11805, Spintronics XIV, 1180516 (1 August 2021); https://doi.org/10.1117/12.2596033

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