کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1869434 | 1530996 | 2012 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electronic band structure of polytypical nanowhiskers
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
III-V compound nanowhiskers have attracted much attention recently due to their distinguished electronic and optical properties. In these nanostructures it was observed a phenomenon called polytypism, i. e., a phase alternation between zinc-blend and wurtzite structure. Although the polytypical effect is now well controlled, a more detailed band structure model is not still done, especially in the vicinity of the band edges. In this theoretical study we propose a model to calculate the electronic band structure in the vicinity of the band edges for polytypical nanowhiskers. Relying on group theory concepts and on the k p method we connected the irreducible representations at the Î-point of the two crystal structures and described them in a single matrix. Our results for InP show the carriers' spatial separation which agrees with reported experiments.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Procedia - Volume 28, 2012, Pages 72-78
Journal: Physics Procedia - Volume 28, 2012, Pages 72-78
نویسندگان
Paulo Eduardo de Faria Junior, Guilherme Matos Sipahi,