کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1861330 1037506 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of diffusion layers and defect layer on acoustic phonons transport through the structure consisting of different films
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Effect of diffusion layers and defect layer on acoustic phonons transport through the structure consisting of different films
چکیده انگلیسی

By using the continuum elastic approximation model and the transfer matrix method, we investigate the effect of diffusion layers and defect layer on acoustic phonons transport through the structure consisting of different films. Our work show that most acoustic phonons can easily pass the structure, but some only have much less transmission probabilities and form corresponding dips in the transmission spectrum. With the change of the structure parameters such as the width of diffusion layers and defect layer, the number of unit cell and the density of containing Al in diffusion layers and defect layer, the magnitude of the frequencies of acoustic phonons corresponding to the dips almost remain unchanged, but the transmission coefficients corresponding to the dips change at different degree, and the transmission probabilities of some frequencies are very sensitive to the variation of the above-mentioned structure parameters. These results can provide some references in controlling the transmission coefficients of acoustic phonons, devising parts of acoustic apparatus and theoretical investigation related.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 372, Issue 30, 21 July 2008, Pages 5046–5051
نویسندگان
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