Dynamics of K 2 Ni 2 (SO 4 ) 3 governed by proximity to a 3D spin liquid model.

Autor: Gonzalez MG; Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany.; Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin, 14195, Berlin, Germany., Noculak V; Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany.; Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin, 14195, Berlin, Germany., Sharma A; Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland., Favre V; Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland., Soh JR; Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland., Magrez A; Crystal Growth Facility, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland., Bewley R; ISIS Pulsed Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0QX, UK., Jeschke HO; Research Institute for Interdisciplinary Science, Okayama University, Okayama, 700-8530, Japan.; Department of Physics and Quantum Centre of Excellence for Diamond and Emergent Materials (QuCenDiEM), Indian Institute of Technology Madras, Chennai, 600036, India., Reuther J; Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany.; Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin, 14195, Berlin, Germany.; Department of Physics and Quantum Centre of Excellence for Diamond and Emergent Materials (QuCenDiEM), Indian Institute of Technology Madras, Chennai, 600036, India., Rønnow HM; Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland., Iqbal Y; Department of Physics and Quantum Centre of Excellence for Diamond and Emergent Materials (QuCenDiEM), Indian Institute of Technology Madras, Chennai, 600036, India., Živković I; Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland. ivica.zivkovic@epfl.ch.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2024 Aug 21; Vol. 15 (1), pp. 7191. Date of Electronic Publication: 2024 Aug 21.
DOI: 10.1038/s41467-024-51362-1
Abstrakt: Quantum spin liquids (QSLs) have become a key area of research in magnetism due to their remarkable properties, such as long-range entanglement, fractional excitations, and topologically protected phenomena. Recently, the search for QSLs has expanded into the three-dimensional world, despite the suppression of quantum fluctuations due to high dimensionality. A new candidate material, K 2 Ni 2 (SO 4 ) 3 , belongs to the langbeinite family and consists of two interconnected trillium lattices. Although magnetically ordered, it exhibits a highly dynamical and correlated state. In this work, we combine inelastic neutron scattering measurements with density functional theory (DFT), pseudo-fermion functional renormalization group (PFFRG), and classical Monte Carlo (cMC) calculations to study the magnetic properties of K 2 Ni 2 (SO 4 ) 3 , revealing a high level of agreement between experiment and theory. We further reveal the origin of the dynamical state in K 2 Ni 2 (SO 4 ) 3 to be centred around a magnetic network composed of tetrahedra on a trillium lattice.
(© 2024. The Author(s).)
Databáze: MEDLINE
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