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Superlattice reflections [#!KamimuraJPSJ94!#,#!PougetPRL94!#,#!HirotaPRL94!#]

Superlattice reflections for lattice dimerization were found at h/2,k,l/2 (h,k,l all odd) with electron diffraction (Kamimura et al. [145]) and X-ray measurements (Pouget et al. [146]). Almost at the same time, Hirota et al. confirmed with neutron scattering measurements that even-number k's are also allowed [147].