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) Temperature dependence of magnon scattering in Ca₃Ru₂O₇ (T_N = 56 K). (b) Normalized frequency, ω_o(T)/ω_o(0) (squares), and linewidth, Γ (circles), as a function of normalized temperature, T/T_N. (c) Pressure dependence of magnon mode in Ca₃Ru₂O₇ at T = 3.5 K. (d) Magnon mode frequency (ω_o) and linewidth (Γ) versus pressure, and evidence for a pressure-induced phase change above 46 kbar where no magnon scattering is observed. Reprinted with permission from Refs. [45] and [46], copyright 2006 by the American Physical Society.