Structural, elastic, and vibrational properties of phase H: A first-principles simulation<xref rid="cpb_26_6_067401fn1" ref-type="fn">*</xref><fn id="cpb_26_6_067401fn1"><label>*</label><p>Project supported by the Key Laboratory of Earthquake Prediction, Institute of Earthquake Science, China Earthquake Administration (CEA) (Grant Nos. 2016IES010104 and 2012ES0408) and the National Natural Science Foundation of China (Grant Nos. 41174071, 41273073, 41373060, and 41573121).</p></fn>

Structural, elastic, and vibrational properties of phase H: A first-principles simulation**

Project supported by the Key Laboratory of Earthquake Prediction, Institute of Earthquake Science, China Earthquake Administration (CEA) (Grant Nos. 2016IES010104 and 2012ES0408) and the National Natural Science Foundation of China (Grant Nos. 41174071, 41273073, 41373060, and 41573121).

Lv Chao-Jia¹, Liu Lei^{1, 2, †}, Gao Yang³, Liu Hong¹, Yi Li¹, Zhuang Chun-Qiang⁴, Li Ying^{1, 2}, Du Jian-Guo¹

(color online) Lattice parameters of phase H each as a function of pressure: (a) angle and a, b, and c axes of phase H, (b) cell volume of phase H, (c) symmetrization of hydrogen bonds in phase H with Pm symmetry. The black dashed line represents the function of . At about 30 GPa, and reach the half of .