We report ⁷Li NMR measurements on Li₂In_1-xSc_xMo₃O₈ at concentrations x=0, 0.6 and 1. The results are compared with those of other groups on the end members of the series [1] and with previous work using muon spin rotation (µSR) [2]. The sample dependence and the effects of pressure on the NMR spectra and on the temperature dependence of the spin-lattice relaxation will be discussed, as well as their implications for possible spinon excitations in the spin liquid regime at intermediate Sc concentration.
[1] Y. Haraguchi, C. Michioka, M. Imai, H. Ueda, and K. Yoshimura, Phys. Rev. B 92, 014409 (2015).
[2] A. Akbari-Sharbaf, R. Sinclair, A. Verrier, D. Ziat, H. D. Zhou, X. F. Sun, and J. A. Quilliam, Phys. Rev. Lett. 120, 227201 (2018)