کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1790816 | 1524451 | 2013 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Growth evolution and magneto-optical characteristics of self-assembled ZnTe/ZnMnSe quantum dots Growth evolution and magneto-optical characteristics of self-assembled ZnTe/ZnMnSe quantum dots](/preview/png/1790816.png)
The growth evolution and the magneto-optical characteristics of the self-assembled single-layer ZnTe/ZnMnSe quantum dots grown by molecular beam epitaxy were investigated. As the ZnTe coverage is above 2.0 monolayers, a Stranski–Krastanov growth process is observed with a significantly increased dot density on top of two-dimensional plateaus. As the coverage exceeds 2.7 monolayers, ripened dots dominate instead. Furthermore, a saturated degree of circular polarization of 76% at applied magnetic field of 4 T and the formation of magnetic polarons with a formation time of 7.4 ns were demonstrated.
► Size of self-assembled ZnTe QD on ZnMnSe was controlled by tuning coverage.
► Stranski–Krastanov and ripened process occur as coverage exceeds 2.0 and 2.7 ML, respectively.
► QD system shows a strong degree of polarization and the formation of magnetic polarons.
Journal: Journal of Crystal Growth - Volume 378, 1 September 2013, Pages 222–225