Raman scattering under extreme conditions<xref rid="cpb_27_7_077801_fn1" ref-type="fn">*</xref><fn id="cpb_27_7_077801_fn1"> <label>*</label><p>Project supported by the Ministry of Science and Technology of China (Grant Nos. 2016YFA0300504 and 2017YFA0302904) and the National Natural Science Foundation of China (Grant Nos. 11474357, 11774419, 11604383, and 11704401). Y. Y. was supported by the Scientific Equipment Development Project of Chinese Academy of Sciences (Grant No. YJKYYQ20170027).</p></fn>

Raman scattering under extreme conditions* *

Project supported by the Ministry of Science and Technology of China (Grant Nos. 2016YFA0300504 and 2017YFA0302904) and the National Natural Science Foundation of China (Grant Nos. 11474357, 11774419, 11604383, and 11704401). Y. Y. was supported by the Scientific Equipment Development Project of Chinese Academy of Sciences (Grant No. YJKYYQ20170027).

Jin Feng¹, Yang Yang², Zhang An-Min¹, Ji Jian-Ting^{1, 2}, Zhang Qing-Ming^{1, 2, 3, †}

(color online) (a) Crystal structures of three different phases. The open circles correspond to the parent structure without modulation (phase II). In phase I, there are two Raman active stretching ( A g ( S ) , B 3 g ( S ) ) and librational ( A g ( L ) , B 3 g ( L ) ) modes, while in phase V, only the amplitude (AMP) mode is Raman active. Raman spectra obtained for solid iodine up to 30 GPa (b) and for solid bromine up to 108 GPa (c), respectively. Open and closed circles correspond to X bands in phase I and new bands in phase V, respectively. Reprinted with permission from Ref. [7], copyright 2005 by the American Physical Society.