| Revista: | Brazilian journal of physics |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000310499 |
| ISSN: | 0103-9733 |
| Autores: | Ramirez, H.Y1 Camacho, A.S Lew Yan Voon, L C2 |
| Instituciones: | 1Universidad de Los Andes, Departamento de Física, Bogotá. Colombia 2Wright State University, Dayton, Ohio. Estados Unidos de América |
| Año: | 2006 |
| Periodo: | Sep |
| Volumen: | 36 |
| Número: | 3B |
| Paginación: | 869-873 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental |
| Resumen en inglés | The effect of a dc electric field on the temporal evolution of an electron in a double rectangular quantum dot is explored in this work. In the framework of the effective mass approximation, first-order scattering rates for interaction between confined electron-''free'' electron and electron-longitudinal acoustic phonon at room temperature are calculated in the high tunneling regime, and used to evaluate the dynamics of the population and coherence in the first three confined levels under a short ac electric field pulse. Small values of these rates dependent upon the bias field make feasible the emission of coherent radiation at terahertz range |
| Disciplinas: | Física y astronomía |
| Palabras clave: | Física de partículas y campos cuánticos, Puntos cuánticos, Campo eléctrico, Coherencia, Relajación |
| Keyword: | Physics and astronomy, Particle physics and quantum fields, Quantum dots, Electric field, Coherence, Relaxation |
| Texto completo: | Texto completo (Ver HTML) |
