Comment on "On the $T_S$-Anomaly in Betaine Calcium Chloride Dihydrate"
arXiv:cond-mat/9805319 · doi:10.1143/JPSJ.67.3324
Abstract
Recently, Hlinka and Ishibashi [J. Phys. Soc. Jpn. 67, 495 (1998)] discussed the $T_S$-anomaly in betaine calcium chloride dihydrate (BCCD) in a Landau-type approach. We comment on the shortcomings of this approach and discuss the $T_S$-anomaly in the framework of a microscopical pseudo spin model based on a realistic description of BCCD in terms of symmetry-adapted local modes.
2 pages, RevTex, submitted to J. Phys. Soc. Jpn