کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8160368 1525106 2018 39 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The Rashba and Dresselhaus spin-orbit interactions effects on the optical properties of a quantum ring
ترجمه فارسی عنوان
تعاملات مدار چرخشی و رضاشاه بر روی خواص اپتیکی یک حلقه کوانتومی تاثیر می گذارد
کلمات کلیدی
حلقه های کوانتومی، تعاملات مدار چرخشی، زمینه های خارجی، خواص نوری،
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
چکیده انگلیسی
Influence of Rashba and Dresselhaus spin orbit interactions (SOIs) as well as external magnetic and electric fields on optical behaviors of quantum rings (QRs) were studied. To achieve this purpose, the matrix diagonalization method was exerted to compute energy eigenvalues of the system in the presence of electric and magnetic fields. Besides, the compact density matrix approach was used to calculate the refractive index (RI) and absorption coefficient (AC) of 1 → 2, 1 → 3, 1 → 6 and 3 → 5 transitions. Moreover, by increasing the magnetic (B) and electric (F) fields, energy splitting of intersubband energy levels was increased and thus the RIs and ACs of the system are changed. The results clearly show that, position and peak value of total RIs and ACs curves of all transitions experienced significant change by increasing the magnetic and electric fields in the presence of SOIs. Finally, the effect of size variation on optical RI changes and ACs was studied. The results show that the higher inner radii, R1, is, the stronger quantum confinement and energy increase are. These results are relevant for the designing of spin-based devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 543, 15 August 2018, Pages 27-31
نویسندگان
, ,