M ar 2 01 9 A rare-earth Kitaev material candidate YbCl

Jie Xing, Huibo Cao, Eve Emmanouilidou, Chaowei Hu, Jinyu Liu, David Graf, Arthur P. Ramirez, Gang Chen, 6 and Ni Ni ∗ Department of Physics and Astronomy and California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA National High Magnetic Field Laboratory, 1800 E. Paul Dirac Drive, Tallahassee, FL 32310, USA Department of Physics, University of California, Santa Cruz, CA 95064, USA Department of Physics and Center of Theoretical and Computational Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, China State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China (Dated: March 12, 2019)