مشخصات پژوهش

عنوان	Tunable terahertz absorption in Si/SiO2-graphene multilayers: disorder and magneto-optical effects
نوع پژوهش	مقاله چاپ شده
کلیدواژه‌ها	disorder, perpendicular magnetic field, terahertz absorption, graphene, circular polarization selective sensors
چکیده	In this work we theoretically investigate the influence of disorder and external perpendicular magnetic field on terahertz (THz) absorption in graphene/SiC cap layers on top of one-dimensional photonic structures. We show that left-handed circularly polarized light absorption can be achieved up to 0.9 and even nearly perfect absorption at magnetic fields over 4 T. It is also demonstrated that multichannel absorption can be obtained, in a broad frequency range, by increasing the disorder strength in the layer thicknesses, outperforming the corresponding periodic structures. Altogether, our results reveal the potentialities of introducing disorder to not only enhance but also to tune absorption in photonic superlattices with graphene under the influence of an external magnetic field, allowing for applications such as THz circular polarization selective sensors and photodetectors.
پژوهشگران	فلیپ پینهیرو (نفر پنجم)، کارلوس هومبرتا الیویرا کوستا (نفر چهارم)، کلادیونور بزررا (نفر سوم)، چیتارانجان نایاک (نفر دوم)، آرزو رشیدی (نفر اول)