Lattice vibrational spectra of double-helix LiP Hui Wang, Tongwei Li, Zhenlong Lv, Weiwei Ju, Xiaoyan Zhao, Jinghan You, Liben Li, Xiaowu Cai and Han Han EPL, 105 1 (2014) 16001 Published online: 31 January 2014 DOI: 10.1209/0295-5075/105/16001