We measured the electrical resistivity and the ¹²¹Sb nuclear quadrupole resonance (NQR) spectra of La₃TiSb₅, which is a nonmagnetic reference system for a locally noncentrosymmetric antiferromagnet Ce₃TiSb₅, in order to determine its physical properties. The resistivity exhibited a hump anomaly at 120 K, suggesting a phase transition. The NQR spectra split below 110 K, whereas the nuclear spin-lattice relaxation exhibited no anomalies. These results can be explained by the incommensurate charge-density-wave (CDW) transition. This finding suggests the importance of quasi-one-dimensional characteristics and CDW instability in these systems.
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Manago et al. (2024) studied this question.
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