Relation between the Co-O bond lengths and the spin state of Co in layered Cobaltates: a high-pressure study oleh Yi-Ying Chin, Hong-Ji Lin, Zhiwei Hu, Chang-Yang Kuo, Daria Mikhailova, Jenn-Min Lee, Shu-Chih Haw, Shin-An Chen, Walter Schnelle, Hirofumi Ishii, Nozomu Hiraoka, Yen-Fa Liao, Ku-Ding Tsuei, Arata Tanaka, Liu Hao Tjeng, Chien-Te Chen, Jin-Ming Chen