Recent progress on magnetic-field studies on quantum-spin-liquid candidates

Ma Zhen¹, Ran Kejing¹, Wang Jinghui¹, Bao Song¹, Cai Zhengwei¹, Li Shichao¹, Wen Jinsheng^{1, 2, †}

(color online) Magnetic excitation spectra along high-symmetry directions under (a) zero, and (b) 7.8-T fields applied parallel to the c axis. Curves are fits to the spin-wave excitations using the anisotropic spin model. From Ref. [45].