Partial magnetization plateau emerging from a quantum spin ice state in   Tb2Ti2O7
  The quantum spin ice model applied to Tb2Ti2O7 predicts that magnetic fields applied along the [111] axis will induce a partial magnetization plateau [H. R. Molavian and M. J. P. Gingras, J. Phys.: Condens. Matter 21, 172201 (2009)]. We test this hypothesis using ac magnetic susceptibility and muon-spin relaxation measurements, finding features at 15 and 65 mT agreeing with the predicted boundaries of the magnetization plateau. This suggests that Tb2Ti2O7 is well described by a quantum spin ice model with an effective exchange constant of Jeff = 0.17(1) K. 
P. J. Baker, M. J. Matthews, S. R. Giblin, P. Schiffer, C. Baines, and   D. Prabhakaran
cond-mat.str-el