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We report the low temperature magnetic properties of Ce$_2$Sn$_2$O$_7$, arare-earth pyrochlore. Our susceptibility and magnetization measurements showthat due to the thermal isolation of a Kramers doublet ground state,Ce$_2$Sn$_2$O$_7$ has Ising-like magnetic moments of $\sim1.18$$\mu_\mathrm{B}$. The magnetic moments are confined to the local trigonal axes,as in a spin ice, but the exchange interactions are antiferromagnetic. Below 1K the system enters a regime with antiferromagnetic correlations. In contrastto predictions for classical $\langle 111 \rangle$-Ising spins on thepyrochlore lattice, there is no sign of long-range ordering down to 0.02 K. Ourresults suggest that Ce$_2$Sn$_2$O$_7$ features an antiferromagnetic liquidground state with strong quantum fluctuations.

Candidate Quantum Spin Liquid in the Ce\textsuperscript{3+} Pyrochlore Stannate Ce$_2$Sn$_2$O$_7$