| Автор | Wei-Dong Sheng |
| Автор | Jian-Bai Xia |
| Дата выпуска | 1996-05-13 |
| dc.description | A transfer matrix approach is presented for the study of electron conduction in an arbitrarily shaped cavity structure embedded in a quantum wire. Using the boundary conditions for wave functions, the transfer matrix at an interface with a discontinuous potential boundary is obtained for the first time. The total transfer matrix is calculated by multiplication of the transfer matrix for each segment of the structure as well as numerical integration of coupled second-order differential equations. The proposed method is applied to the evaluation of the conductance and the electron probability density in several typical cavity structures. The effect of the geometrical features on the electron transmission is discussed in detail. In the numerical calculations, the method is found to be more efficient than most of the other methods in the literature and the results are found to be in excellent agreement with those obtained by the recursive Green's function method. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | A transfer matrix approach to conductance in quantum waveguides |
| Тип | paper |
| DOI | 10.1088/0953-8984/8/20/009 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 8 |
| Первая страница | 3635 |
| Последняя страница | 3645 |
| Аффилиация | Wei-Dong Sheng; CCAST (World Laboratory), PO Box 8730, Beijing, 100080, and National Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, PO Box 912, Beijing 100083, People's Republic of China |
| Аффилиация | Jian-Bai Xia; CCAST (World Laboratory), PO Box 8730, Beijing, 100080, and National Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, PO Box 912, Beijing 100083, People's Republic of China |
| Выпуск | 20 |
