Magnetic Field Induced Quantum Spin Liquid in the Two Coupled Trillium Lattices of K2Ni2(SO4)(3)

Autor(es):Mostrar menos -

Zivkovic, Ivica ^[1] ; Favre, Virgile ^[1] ; Mejia, Catalina Salazar ^{[2, 3]} ; Jeschke, Harald O. ^[4] ; Magrez, Arnaud ^[5] ; Dabholkar, Bhupen ^{[6, 7]} ; Noculak, Vincent ^{[8, 9, 10]} ; Freitas, Rafael S. ^[11] ; Jeong, Minki ^[12] ; Hegde, Nagabhushan G. ^[1] ; Testa, Luc ^[1] ; Babkevich, Peter ^[1] ; Su, Yixi ^[13] ; Manuel, Pascal ^[14] ; Luetkens, Hubertus ^[15] ; Baines, Christopher ^[15] ; Baker, Peter J. ^[14] ; Wosnitza, Jochen ^{[16, 2, 3]} ; Zaharko, Oksana ^[17] ; Iqbal, Yasir ^{[6, 7]} ; Reuther, Johannes ^{[8, 9, 10]} ; Ronnow, Henrik M. ^[1]

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^[1] Ecole Polytech Fed Lausanne, Lab Quantum Magnetism, Inst Phys, CH-1015 Lausanne - Switzerland

^[2] Helmholtz Zentrum Dresden Rossendorf, Hochfeld Magnetlab Dresden HLD EMFL, D-01328 Dresden - Germany

^[3] Helmholtz Zentrum Dresden Rossendorf, Wurzburg Dresden Cluster Excellence Ctqmat, D-01328 Dresden - Germany

^[4] Okayama Univ, Res Inst Interdisciplinary Sci, Okayama 7008530 - Japan

^[5] Ecole Polytech Fed Lausanne, Crystal Growth Facil, CH-1015 Lausanne - Switzerland

^[6] Indian Inst Technol Madras, Dept Phys, Chennai 600036, Tamil Nadu - India

^[7] Indian Inst Technol Madras, Quantum Ctr Diamond & Emerging Mat QuCenDiEM Grp, Chennai 600036, Tamil Nadu - India

^[8] Free Univ Berlin, Dahlem Ctr Complex Quantum Syst, D-14195 Berlin - Germany

^[9] Free Univ Berlin, Fachbereich Phys, D-14195 Berlin - Germany

^[10] Helmholtz Zentrum Mat & Energie, Hahn Meitner Pl 1, D-14109 Berlin - Germany

^[11] Univ Sao Paulo, Inst Fis 7, BR-05508090 Sao Paulo - Brazil

^[12] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands - England

^[13] Forschungszentrum Julich, Heinz Maier Leibnitz Zentrum MLZ, Julich Ctr Neutron Sci JCNS, Lichtenbergstr 1, D-85747 Garching - Germany

^[14] STFC Rutherford Appleton Lab, ISIS Pulsed Neutron & Muon Source, Harwell Sci & Innovat Campus, Didcot OX11 0QX, Oxon - England

^[15] Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen - Switzerland

^[16] Tech Univ Dresden, Inst Festkorper & Mat Phys, D-01062 Dresden - Germany

^[17] Paul Scherrer Inst, Lab Neutron Scattering & Imaging, CH-5253 Villigen - Switzerland

• Tipo de documento: Artigo Científico
• Fonte: Physical Review Letters; v. 127, n. 15 OCT 6 2021.
• Citações Web of Science: 0

Resumo

Quantum spin liquids are exotic states of matter that form when strongly frustrated magnetic interactions induce a highly entangled quantum paramagnet far below the energy scale of the magnetic interactions. Three-dimensional cases are especially challenging due to the significant reduction of the influence of quantum fluctuations. Here, we report the magnetic characterization of K2Ni2(SO4)(3) forming a three-dimensional network of Ni2+ spins. Using density functional theory calculations, we show that this network consists of two interconnected spin-1 trillium lattices. In the absence of a magnetic field, magnetization, specific heat, neutron scattering, and muon spin relaxation experiments demonstrate a highly correlated and dynamic state, coexisting with a peculiar, very small static component exhibiting a strongly renonnalized moment. A magnetic field B greater than or similar to 4 T diminishes the ordered component and drives the system into a pure quantum spin liquid state. This shows that a system of interconnected S = 1 trillium lattices exhibits a significantly elevated level of geometrical frustration. (AU)

• Processo FAPESP: 15/16191-5 - Pesquisas em novos materiais envolvendo campos magnéticos intensos e baixas temperaturas
• Beneficiário: Gennady Gusev
• Modalidade de apoio: Auxílio à Pesquisa - Temático