caa a22 4500 528785885 20190713030955.0 cr unu---uuuuu 180924s2015 xx s 000 0 eng 10.3929/ethz-b-000104909 doi 10.1038/ncomms9278 doi (ETHRESEARCH)oai:www.research-collection.ethz.ch:20.500.11850/104909 Thermodynamic phase transitions in a frustrated magnetic metamaterial [Elektronische Daten] [Laura J. Heyderman, Luca Anghinolfi, Hubertus Luetkens, Justin Perron, Machiel G. Flokstra, Oles Sendetskyi, Andreas Suter, Thomas Prokscha, Peter M. Derlet, S.L. Lee, Laura J. Heyderman] Nat Commun Open access ethresearch Materials with interacting magnetic degrees of freedom display a rich variety of magnetic behaviour that can lead to novel collective equilibrium and out-of-equilibrium phenomena. In equilibrium, thermodynamic phases appear with the associated phase transitions providing a characteristic signature of the underlying collective behaviour. Here we create a thermally active artificial kagome spin ice that is made up of a large array of dipolar interacting nanomagnets and undergoes phase transitions predicted by microscopic theory. We use low energy muon spectroscopy to probe the dynamic behaviour of the interacting nanomagnets and observe peaks in the muon relaxation rate that can be identified with the critical temperatures of the predicted phase transitions. This provides experimental evidence that a frustrated magnetic metamaterial can be engineered to admit thermodynamic phases. Creative Commons Attribution 4.0 International http://creativecommons.org/licenses/by/4.0 ethresearch Heyderman Laura J. joint author Anghinolfi Luca joint author Luetkens Hubertus joint author Perron Justin joint author Flokstra Machiel G. joint author Sendetskyi Oles joint author Suter Andreas joint author Prokscha Thomas joint author Derlet Peter M. joint author Lee S.L. joint author Nature Communications London : Nature Publishing Group 6, p. 8278 2041-1723 http://hdl.handle.net/20.500.11850/104909 text/html WWW-Backlink auf das Repository (Open access) 1 Journal Article ethresearch ETHRESEARCH 856 40 http://hdl.handle.net/20.500.11850/104909 text/html WWW-Backlink auf das Repository (Open access) ETHRESEARCH 700 1- Heyderman Laura J. joint author ETHRESEARCH 700 1- Anghinolfi Luca joint author ETHRESEARCH 700 1- Luetkens Hubertus joint author ETHRESEARCH 700 1- Perron Justin joint author ETHRESEARCH 700 1- Flokstra Machiel G. joint author ETHRESEARCH 700 1- Sendetskyi Oles joint author ETHRESEARCH 700 1- Suter Andreas joint author ETHRESEARCH 700 1- Prokscha Thomas joint author ETHRESEARCH 700 1- Derlet Peter M. joint author ETHRESEARCH 700 1- Lee S.L. joint author ETHRESEARCH 773 0- Nature Communications London : Nature Publishing Group 6, p. 8278 2041-1723 BK010053 XK010053 XK010000 ETHRESEARCH ETHRESEARCH ETHRESEARCH Journal Article Open access