标题： 锌镁碲化物（Zn(1-x)MgxTe，x<0.09）中的声子极化激元：拉曼散射研究 显示英文标题

标题： Phonon-polaritons in Zn(1-x)MgxTe (x<0.09): A Raman scattering study

摘要： 声子极化激元（PP）是声子-光子耦合模式。 使用近前向拉曼散射，可以测量立方Zn(1-x)MgxTe（x<0.09）半导体合金的PP。 虽然在纯ZnTe中PP耦合几乎不发展，但少量的Mg合金化足以稳定一种长寿命的PP，该PP与晶格强结合，即具有明显的声子特性，同时又来源于PP色散中的高度色散的光子瓶颈，具有较快的特性。 通过结合声子和光子的优点，由ZnTe少量Mg合金化产生的长寿命PP优于原始ZnTe的PP，从拉曼截面计算来看，原始ZnTe的PP只能在两种优点之间达到平衡的折中方案，即强度和速度。 关于Zn(1-x)MgxTe（x<0.09）相关PP的晶格动力学讨论基于X射线衍射和固态核磁共振对晶格宏观和微观结构的初步研究，进一步依赖于在Zn(1-x)MgxTe（x~0）的Mg稀释极限下对PP背后本征声子模式的从头算计算，并考虑了各种Mg同位素。 显示英文摘要

摘要： Phonon-polaritons (PP) are phonon-photon coupled modes. Using near-forward Raman scattering, the PP of the cubic Zn(1-x)MgxTe (x<0.09) semiconductor alloy could be measured. While the PP-coupling hardly develops in pure ZnTe, minor Mg-alloying suffices to stabilize a long-lifetime PP strongly bound to the lattice, i.e., with a pronounced phonon character, and yet a fast one originating from the highly dispersive photon-like bottleneck of the PP-dispersion. By combining the advantages of a phonon and of a photon, the long-lifetime PP generated by minor Mg-alloying of ZnTe marks an improvement over the PP of pristine ZnTe, that, from the Raman cross section calculation, can only achieve a balanced compromise between the two kinds of advantages, intensity and speed. The discussion of the PP-related lattice dynamics of Zn(1-x)MgxTe (x<0.09) is grounded in a preliminary study of the lattice macro- and microstructure using X-ray diffraction and solid-state nuclear magnetic resonance, respectively, and further relies on ab initio calculations of the native phonon modes behind the PP in the Mg-dilute limit of Zn(1-x)MgxTe (x~0), considering various Mg-isotopes.