论文标题
CDTE量子井中界面各向异性的表现
Manifestation of interface anisotropy in CdTe quantum wells
论文作者
论文摘要
具有对称CD $ _ {0.9} $ Zn $ _ {0.1} $ _ {0.1} $ te/cdte/cd $ _ {0.9} $ zn $ _ {0.1 $ _ {0.1} $ te和不对称的$ te和不对称CD $ _ {0.9} $ Zn $ _ {0.1} $ te/cdte/cd $ _ {0.4} $ mg $ _ {0.6} $ te屏障。测量了这些结构反射光的stokes参数。在具有对称屏障的结构中，在反射光谱中发现了激子共振，并且在光致发光光谱中不存在。在具有不对称屏障的结构中，在激子共振的区域中，与散装晶体的对称性相比，界面的对称性较低，检测到光双折射的现象。对这两种现象进行了讨论。
Photoluminescence and polarized reflection spectra of quantum well structures with symmetric Cd$_{0.9}$Zn$_{0.1}$Te/CdTe/Cd$_{0.9}$Zn$_{0.1}$Te and asymmetric Cd$_{0.9}$Zn$_{0.1}$Te/CdTe/Cd$_{0.4}$Mg$_{0.6}$Te barriers were studied. The Stokes parameters of the reflected light from these structures were measured. In the structures with symmetric barriers, exciton resonances were found in the reflection spectra and were not present in the photoluminescence spectra. In structures with asymmetric barriers, in the region of exciton resonances, the phenomenon of light birefringence was detected, caused by a lower symmetry of the interfaces compared to the symmetry of bulk crystals. A discussion of both phenomena was given.
