¹²⁵Te and ¹³⁹La NMR Studies of Single Crystal LaTe₃

抄録

We report ¹²⁵Te and ¹³⁹La NMR studies for single crystals of LaTe₃ between 10 and 160 K under an applied field of H=7.4841 T. We observed the broad ¹²⁵Te(1) NMR signals of metallic Te(1) sheets with a superlattice modulation and the sharp ¹²⁵Te(2) and ¹³⁹La NMR signals of LaTe(2) bi-layers. Temperature dependence of ¹²⁵Te(1) nuclear spin–lattice relaxation times of the modulated Te(1) sheets obeys a modified Korringa relation. The results indicate that the electronic state on the Te(1) sheets is a Landau–Fermi liquid on a misfit superlattice or a Tomonaga–Luttinger liquid in a two-dimensional charge-density wave ordering state.