Symmetry-resolved elastic anomalies in spin-crossover cobaltite LaCoO${}_3$

T. Watanabe, R. Okada, K. Tomiyasu

Ultrasound velocity measurements of the pseudo-cubic spin-crossover cobaltite LaCoO${}_3$ and the lightly Ni-substituted La(Co${}_{0.99}$Ni${}_{0.01}$)O${}_3$ reveal two types of symmetry-…