09 فروردین 1403
جعفر پورصمد بناب

جعفر پورصمد بناب

مرتبه علمی: دانشیار
نشانی: بناب- دانشگاه بناب
تحصیلات: دکترای تخصصی / فیزیک- لیزر
تلفن: 04137745000-1643
دانشکده: دانشکده علوم پایه
گروه: گروه مهندسی اپتیک و لیزر

مشخصات پژوهش

عنوان
The influence of the surface roughness on dielectric function of two-dimensional electron gas: a Lindhard model approach
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
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پژوهشگران آرش فیروزنیا (نفر اول)، جعفر پورصمد بناب (نفر دوم)

چکیده

Low field response function calculations have been performed on a two-dimensional electron gas with well-defined electron-surface roughness scattering. The Lindhard model was employed to compute the response function. In particular, detailed investigations were made on the system searching for an interplay between surface roughness with well-defined correlation function, (characterizes by asperity height and correlation length) spatial confinement and the dielectric function. We analyze to what extent the normal behavior and functionality of dielectric function of two-dimensional devices are modified by random scattering events caused by the contribution from the surface roughness. Results of the current work indicate that contribution of the surface roughness on scattering and absorption process could not be considered as an underestimating effect. We find, however, that functionality of the dielectric function seems to be quite independent of the particular roughness features.