1. Metastable Kitaev Magnets
- Author
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Maignan, Antoine, Schmidt, Marcus, Prots, Yurii, Lebedev, Oleg, Daou, Ramzy, Chang, Chun-Fu, Kuo, Chang-Yang, Hu, Zhiwei, Chen, Chien-Te, Weng, Shih-Chang, Altendorf, Simone, Tjeng, Liu-Hao, Grin, Yuri, International Iberian Nanotechnology Laboratory (INL), Ludwig-Maximilians-Universität München (LMU), Laboratoire de cristallographie et sciences des matériaux (CRISMAT), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences et Techniques de la Réadaptation [Lyon] (ISTR), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Ministry of Science and Technology of the People’s Republic of China, Department of Chemical Sciences, University of Messina, Dipartimento di Fisica e Astronomia 'Galileo Galilei', Università degli Studi di Padova = University of Padua (Unipd), CICNanoGUNE, Universidad Complutense de Madrid = Complutense University of Madrid [Madrid] (UCM), Boston College (BC), Laboratoire Léon Brillouin (LLB - UMR 12), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Department of Computer Science [Purdue], Purdue University [West Lafayette], Max Planck Institute for chemical Physics of Solids, Max Planck Institute for Chemical Physics of Solids (CPfS), and Max-Planck-Gesellschaft
- Subjects
Oxygen evolution reaction ,Polymers and Plastics ,Phthalocyanines ,[CHIM.MATE]Chemical Sciences/Material chemistry ,Catalysis ,Electronic, Optical and Magnetic Materials ,Biomaterials ,Colloid and Surface Chemistry ,Materials Chemistry ,Covalent organic frameworks, Phthalocyanines, Earth abundant transition metals, Electrocatalysis, Oxygen evolution reaction ,[CHIM]Chemical Sciences ,Earth abundant transition metals ,Electrocatalysis ,Covalent organic frameworks - Abstract
International audience; Nearly two decades ago, Alexei Kitaev proposed a model for spin-1/2 particles with bond-directional interactions on a two-dimensional honeycomb lattice which had the potential to host a quantum spin-liquid ground state. This work initiated numerous investigations to design and synthesize materials that would physically realize the Kitaev Hamiltonian. The first generation of such materials, such as Na2IrO3, α-Li2IrO3, and α-RuCl3, revealed the presence of non-Kitaev interactions such as the Heisenberg and off-diagonal exchange. Both physical pressure and chemical doping were used to tune the relative strength of the Kitaev and competing interactions; however, little progress was made towards achieving a purely Kitaev system. Here, we review the recent breakthrough in modifying Kitaev magnets via topochemical methods that has led to the second generation of Kitaev materials. We show how structural modifications due to the topotactic exchange reactions can alter the magnetic interactions in favor of a quantum spin-liquid phase.
- Published
- 2022