TY  - JOUR
AU  - Živković, Ivica
AU  - Favre, Virgile
AU  - Salazar Mejia, Catalina
AU  - Jeschke, Harald O.
AU  - Magrez, Arnaud
AU  - Dabholkar, Bhupen
AU  - Noculak, Vincent
AU  - Freitas, Rafael S.
AU  - Jeong, Minki
AU  - Hegde, Nagabhushan G.
AU  - Testa, Luc
AU  - Babkevich, Peter
AU  - Su, Yixi
AU  - Manuel, Pascal
AU  - Luetkens, Hubertus
AU  - Baines, Christopher
AU  - Baker, Peter J.
AU  - Wosnitza, Jochen
AU  - Zaharko, Oksana
AU  - Iqbal, Yasir
AU  - Reuther, Johannes
AU  - Rønnow, Henrik M.
TI  - Magnetic Field Induced Quantum Spin Liquid in the Two Coupled Trillium Lattices of K$_2$Ni$_2$(SO$_4$)$_3$
JO  - Physical review letters
VL  - 127
IS  - 15
SN  - 1079-7114
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2021-03806
SP  - 157204
PY  - 2021
AB  - 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.
LB  - PUB:(DE-HGF)16
C6  - 34677991
UR  - <Go to ISI:>//WOS:000705651600013
DO  - DOI:10.1103/PhysRevLett.127.157204
UR  - https://juser.fz-juelich.de/record/897473
ER  -