High-resolution coherent Raman spectroscopy of vibrons in solid parahydrogen
High-resolution coherent Raman spectroscopy of vibrons in solid parahydrogen
复制标题
固体仲氢中振动子的高分辨率相干拉曼光谱
DOI：
10.1103/physrevb.67.184303
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发表时间：
2003
影响因子：
3.7
通讯作者：
K. Hakuta
中科院分区：
文献类型：
--
作者：
K. Kuroda;A. Koreeda;S. Takayanagi;M. Suzuki;K. Hakuta
对固体仲氢晶体的Q 1 (0)振子进行了相干拉曼光谱分析，光谱分辨率优于1 MHz。拉曼光谱是在恒定分子密度条件下在 4.2 至 13 K 温度范围内测量的。我们表明，拉曼光谱的温度依赖性应该通过振动子和热声声子之间的相互作用通过双声子散射过程来定量描述。我们还研究了分子密度对拉曼位移的影响，并获得了振动带的跳跃相互作用强度。
Coherent Raman spectroscopy is carried out for the Q 1 (0) vibron of solid parahydrogen crystal with a spectral resolution better than I MHz. The Raman spectrum is measured for the temperature from 4.2 to 13 K under constant molecular density condition. We show that the temperature dependence of the Raman spectrum should be quantitatively described via the interaction between vibrons and thermal acoustic phonons through a two-phonon scattering process. We also investigate the effect of molecular density on the Raman shift and obtain the hopping interaction strength for the vibron band.