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Raman tensor of layered MoS2
Optics Letters ( IF 3.1 ) Pub Date : 2020-03-03 , DOI: 10.1364/ol.384524
Ying Ding , Wei Zheng , Mingge Jin , Yanming Zhu , Ruinan Zhu , Zeguo Lin , Feng Huang
Optics Letters ( IF 3.1 ) Pub Date : 2020-03-03 , DOI: 10.1364/ol.384524
Ying Ding , Wei Zheng , Mingge Jin , Yanming Zhu , Ruinan Zhu , Zeguo Lin , Feng Huang
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Raman tensors, one of the basic physical properties of ${{\rm MoS}_2}$, are rarely reported. Here, angle-resolved polarized Raman scatterings on basal and cross planes of layered ${{\rm MoS}_2}$ were carried out using the geometry configuration of parallel polarization, and the Raman tensors of three optical vibration modes were systematically studied. As a polar vibration mode, the differential polarizability of the ${{\rm A}_{1{\rm g}}}$ mode corresponding to the Raman tensor along the $c$ direction is larger than that along the $a$ direction. In addition, it is also larger than that formed by ${{\rm E}_{2{\rm g}}}$ and ${{\rm E}_{1{\rm g}}}$ modes. All the experimental results above are beneficial to the understanding of inelastic light-scattering process of ${{\rm MoS}_2}$.
中文翻译:
分层MoS 2的拉曼张量
拉曼张量是$ {{\ rm MoS} _2} $的基本物理属性之一,很少报道。在这里,使用平行偏振的几何构型在分层的{{{\ rm MoS} _2}}的基面和横截面上进行了角分辨偏振拉曼散射,并系统地研究了三种光学振动模式的拉曼张量。作为极振动模式,对应于沿$ c $方向的拉曼张量的$ {{\ rm A} _ {1 {\ rm g}}} $模式的微分极化率大于沿$ a $的微分极化率。方向。此外,它还比$ {{\ rm E} _ {2 {\ rm g}}} $和$ {{\ rm E} _ {1 {\ rm g}}} $模式。以上所有实验结果均有助于理解$ {{\ rm MoS} _2} $的非弹性光散射过程。
更新日期:2020-03-12
中文翻译:
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分层MoS 2的拉曼张量
拉曼张量是$ {{\ rm MoS} _2} $的基本物理属性之一,很少报道。在这里,使用平行偏振的几何构型在分层的{{{\ rm MoS} _2}}的基面和横截面上进行了角分辨偏振拉曼散射,并系统地研究了三种光学振动模式的拉曼张量。作为极振动模式,对应于沿$ c $方向的拉曼张量的$ {{\ rm A} _ {1 {\ rm g}}} $模式的微分极化率大于沿$ a $的微分极化率。方向。此外,它还比$ {{\ rm E} _ {2 {\ rm g}}} $和$ {{\ rm E} _ {1 {\ rm g}}} $模式。以上所有实验结果均有助于理解$ {{\ rm MoS} _2} $的非弹性光散射过程。