مجله فصل مشترک ها، لایه های نازک و سیستم های با بعد کم
اثرات همزمان شدت نور و میدان مغناطیسی بر خواص نوری حلقه های نوری چندچاهه GaN/AlN با شعاع خارجی ثابت
نوع مقاله : مقاله پژوهشی
چکیده
در اینجا، ما شدت نوری، میدان مغناطیسی، تعداد چاه و ضخامت های حلقه کوانتومی روی جذب نوری حلقه های کوانتومی چندچاهه GaN/AlN شعاع ثابت را مطالعه می کنیم. ما نشان می دهیم، هنگامی که شدت افزایش می یابد، ضریب جذب کلی کاهش می یابد. این موضوع به شعاع داخلی حلقه Rin، میدان مغناطیسی و تعداد چاه ها ربطی ندارد. اگر تعداد چاه ها افزایش یابد ضریب جذب کلی کاهش می یابد. در هر صورت، سیستم با °Rin=400 A در میدان مغناطیسی یک استثناء است. در این سیستم، اگر تعداد چاه ها افزایش یابد، ضریب جذب کلی اول کاهش و سپس افزایش می یابد. با افزایش Rin،ضریبجذب کلی بطور یکنوا افزایش می یابد. این رفتار یکنوای کاهشی برای سیستم های با تعداد بیشر چاه و میادین مغناطیسی بیشتر هم صادق است. در Rin ثابت و برای سیستم های با تعداد بیشتر چاه و مقادیر بالاتر Rin ، با افزایش میدان مغناطیسی ضریب جذب کلی بطور یکنواخت کاهش می یابد. نهایتا، در میادین مغناطیسی پایین تر، ضریب جذب کلی، نسبت به میادین مغناطیسی بالاتر، سریعتر کاهش می یابد.
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