Journal Article

FZJ-2021-03806

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Magnetic Field Induced Quantum Spin Liquid in the Two Coupled Trillium Lattices of K$_2$Ni$_2$(SO$_4$)$_3$

Živković, I. (Corresponding author) ; Favre, V. ; Salazar Mejia, C. ; Jeschke, H. O. ; Magrez, A. ; Dabholkar, B. ; Noculak, V. ; Freitas, R. S. ; Jeong, M. ; Hegde, N. G. ; Testa, L. ; Babkevich, P. ; Su, Y.FZJ* ; Manuel, P. ; Luetkens, H. ; Baines, C. ; Baker, P. J. ; Wosnitza, J. ; Zaharko, O. ; Iqbal, Y. ; Reuther, J. ; Rønnow, H. M.

2021
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/28777  doi:10.1103/PhysRevLett.127.157204

Abstract: 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 renormalized moment. A magnetic field B≳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.

Keyword(s): Magnetic Materials (1st) ; Magnetism (2nd)

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Contributing Institute(s):

1. JCNS-FRM-II (JCNS-FRM-II)
2. Streumethoden (JCNS-2)
3. JCNS-4 (JCNS-4)
4. Heinz Maier-Leibnitz Zentrum (MLZ)

Research Program(s):

1. 6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ) (POF4-6G4) (POF4-6G4)
2. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)

Experiment(s):

1. DNS: Diffuse scattering neutron time of flight spectrometer (NL6S)

Appears in the scientific report 2021

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; Nationallizenz ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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