TAILIEUCHUNG - Influence of phonon confinement on cyclotron–phonon resonance in infinite square quantum well

Magneto-optical absorption coefficient (MOAC) in infinite square quantum well (SQW) is investigated by time-dependent perturbation method. The dependence of MOAC on the photon energy is calculated and graphically plotted. From the graphs showing this dependence, we obtained the spectral line width (the full-width at half maximum - FWHM) of the cyclotron-phonon resonance peaks using Profile method. The results show that the occurrence of peaks satisfies cyclotron-phonon resonance conditions and the FWHM of resonance peak increases with the magnetic field and decreases with the width of the quantum well. | Influence of phonon confinement on cyclotron–phonon resonance in infinite square quantum well INFLUENCE OF PHONON CONFINEMENT ON CYCLOTRON–PHONON RESONANCE IN INFINITE SQUARE QUANTUM WELL VO THANH LAM1 , LE DINH2 1 Sai Gon University, Email: vothanhlam2003@ 2 Hue University of Education, Email: ledinh@ Abstract: Magneto-optical absorption coefficient (MOAC) in infi- nite square quantum well (SQW) is investigated by time-dependent perturbation method. The dependence of MOAC on the photon en- ergy is calculated and graphically plotted. From the graphs showing this dependence, we obtained the spectral line width (the full-width at half maximum - FWHM) of the cyclotron-phonon resonance peaks using Profile method. The results show that the occurrence of peaks satisfies cyclotron-phonon resonance conditions and the FWHM of resonance peak increases with the magnetic field and decreases with the width of the quantum well. Keywords: Quantum well, Infinite square potential, Magneto-optical absorption coefficient, cyclotron - phonon resonance, Full-width at half maximum. 1. INTRODUCTION Cyclotron-phonon resonance (CPR) is an effect resulting from the interaction between electrons and phonons in semiconductors subjected to an electromagnetic field and a static magnetic field [1, 2]. This effect is the combination of two types of resonances: the cyclotron resonance, where the electromagnetic wave frequency Ω is equal to cyclotron frequency ωc [3, 4, 5] and the magneto-phonon resonance, where the phonon frequency ωq is equal to ωc [6, 7]. CPR is considered to be more general than the two above - mentioned resonances due to the combination of two actions: the absorption of a photon of energy ~Ω occurs simultaneously with absorbing or emitting a phonon. This means that the CPR arises at the photon energy ~Ω = p~ωc ± ~ω0 , where p is a positive integer. Because of its pivotal role, the CPR has .

TỪ KHÓA LIÊN QUAN
TAILIEUCHUNG - Chia sẻ tài liệu không giới hạn
Địa chỉ : 444 Hoang Hoa Tham, Hanoi, Viet Nam
Website : tailieuchung.com
Email : tailieuchung20@gmail.com
Tailieuchung.com là thư viện tài liệu trực tuyến, nơi chia sẽ trao đổi hàng triệu tài liệu như luận văn đồ án, sách, giáo trình, đề thi.
Chúng tôi không chịu trách nhiệm liên quan đến các vấn đề bản quyền nội dung tài liệu được thành viên tự nguyện đăng tải lên, nếu phát hiện thấy tài liệu xấu hoặc tài liệu có bản quyền xin hãy email cho chúng tôi.
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.