%0 Journal Article
%A Živković, Ivica
%A Favre, Virgile
%A Salazar Mejia, Catalina
%A Jeschke, Harald O.
%A Magrez, Arnaud
%A Dabholkar, Bhupen
%A Noculak, Vincent
%A Freitas, Rafael S.
%A Jeong, Minki
%A Hegde, Nagabhushan G.
%A Testa, Luc
%A Babkevich, Peter
%A Su, Yixi
%A Manuel, Pascal
%A Luetkens, Hubertus
%A Baines, Christopher
%A Baker, Peter J.
%A Wosnitza, Jochen
%A Zaharko, Oksana
%A Iqbal, Yasir
%A Reuther, Johannes
%A Rønnow, Henrik M.
%T Magnetic Field Induced Quantum Spin Liquid in the Two Coupled Trillium Lattices of K$_2$Ni$_2$(SO$_4$)$_3$
%J Physical review letters
%V 127
%N 15
%@ 1079-7114
%C College Park, Md.
%I APS
%M FZJ-2021-03806
%P 157204
%D 2021
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ 34677991
%U <Go to ISI:>//WOS:000705651600013
%R 10.1103/PhysRevLett.127.157204
%U https://juser.fz-juelich.de/record/897473