论文标题
在$α$ -QUARTZ中对映体手性声子的选择性观察
Selective observation of enantiomeric chiral phonons in $α$-quartz
论文作者
论文摘要
我们报告了右手和左手重量的声子的异常圆形拉曼光谱。发现从有限的波数中从电子模式分裂的声子分支是手性的，具有相反的角动量。我们的分析揭示了手性声子的拉曼选择规则。我们还发现，在拉曼过程中，应在两个光子和一个手性声子之间满足角动量的保护。此外，我们在实验上证明了具有一定频率和波形的声子在其他对映异构体中应相反。
We report anomalous circularly polarized Raman spectra of phonons in right- and left-handed quartzes. The phonon branches splitting from the E-mode at a finite wavenumber were found to be chiral with mutually opposite angular momenta. Our analysis reveals the Raman selection rules for chiral phonons. We also find that the conservation of angular momentum should be satisfied between two photons and one chiral phonon in the Raman process. Furthermore, we experimentally proved that the helicity of phonons with a certain frequency and wavevector should be opposite in the other enantiomer.
