Resonant Raman Scattering in CuGaS_2
Resonant Raman Scattering in CuGaS_2
复制标题
CuGaS_2 中的共振拉曼散射
DOI：
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发表时间：
1977
期刊：
影响因子：
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通讯作者：
S. Sugai
中科院分区：
文献类型：
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作者：
S. Sugai
在室温和85 K下，观察到了CuGaS 2中存在宏观电场时非常声子对拉曼散射的共振增强.当入射光和散射光都平行于光轴偏振时，引起共振的入射光子具有接近A -激子的能量，而当两种光彼此平行但垂直于光轴偏振时，引起共振的入射光子具有接近B -或C -激子的能量。这种对入射光子能量和偏振的依赖性表明了带内Frohlich电子-声子相互作用的重要性。还观察到A1声子的共振行为。这是由变形势相互作用解释的。
Resonant enhancement of Raman scattering by extraordinary phonons with macroscopic electric field is observed in CuGaS 2 at 85 K and at room temperature. The incident photon which induces resonance has an energy near that of A -exciton, when both incident and scattered lights are polarized parallel to the optic axis, and near B - or C -exciton, when both lights are polarized parallel to each other but perpendicular to the optic axis. This dependence on the incident photon energy and polarization demonstrates the importance of the intra band Frohlich electron-phonon interaction. The resonance behavior by A 1 -phonon is also observed. This is explained by the deformation potential interaction.