loading
  • Trang chủ
  • Sách, tuyển tập
  • THE EFFECT OF CONFINED PHONONS ON THE ABSORPTION COEFFICIENT OF A WEAK ELECTROMAGNETIC WAVE BY CONFINED ELECTRONS IN DOPED SUPERLATTICES / Lê, Thái Hưng
Sách, tuyển tập

THE EFFECT OF CONFINED PHONONS ON THE ABSORPTION COEFFICIENT OF A WEAK ELECTROMAGNETIC WAVE BY CONFINED ELECTRONS IN DOPED SUPERLATTICES / Lê, Thái Hưng

Tác giả : Lê, Thái Hưng

Nhà xuất bản : Đại học Quốc gia Hà nội

Năm xuất bản : 2007

Chủ đề : 1. Absorption coefficien. 2. Conductivity tensor. 3. Confined phonons. 4. Doped superlatices. 5. Article.

Chia sẻ

Thông tin chi tiết

Tóm tắt :

The effect of confined phonons on the absorption coefficient of a weak electromagnetic wave by confined electrons in doped surperlattices is theoretically studied by using the Kubo-Mori method. In comparison with the case of unconfined phonons, differentdependence of the absorption coefficient on the electromagnetic wave frequency (ω), the doping concentration (n D ), the number (N) of period, the temperature (T) of the system is obtained. The analytic expressions are numerically evaluated, plotted, and disscussed for a specific doping of the n-GaAs/p-GaAs superlattice. The results show that confined phonons cause some unusual effects. There are two resonant peaks of the absorption coeffient and one of the mass operator. The mass operator’s values are larger and the absorption coeffient’s values are smaller than they are in thecase of unconfined phonons.
Chia sẻ


Hiển thị MARC

 Thông tin dữ liệu nguồn

 Thư viện  Ký hiệu xếp giá  Dữ liệu nguồn
Đại học quốc gia Hà Nội
https://repository.vnu.edu.vn/handle/VNU_123/13328