Transient time-domain resonances and the time scale for tunneling
Transient time-domain resonances found recently in time-dependent solutions to Schrodinger's equation are used to investigate the issue of the tunneling time in rectangular potential barriers. In general, a time-frequency analysis shows that these transients have frequencies above the cutoff fr...
| Autores: | , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2003 |
| País: | México |
| Institución: | Universidad Nacional Autónoma de México |
| Repositorio: | Sistema de Información de la Facultad de Ciencias, UNAM |
| OAI Identifier: | oai:repositorio.fciencias.unam.mx:11154/1664 |
| Acceso en línea: | http://hdl.handle.net/11154/1664 |
| Access Level: | acceso abierto |
| Palabra clave: | Optics Physics, Atomic, Molecular & Chemical |
| Sumario: | Transient time-domain resonances found recently in time-dependent solutions to Schrodinger's equation are used to investigate the issue of the tunneling time in rectangular potential barriers. In general, a time-frequency analysis shows that these transients have frequencies above the cutoff frequency associated with the barrier height, and hence correspond to nontunneling processes. We find, however, a regime characterized by the barrier opacity, where the peak maximum t(max) of the time-domain resonance corresponds to under-the-barrier tunneling. We argue that t(max) represents the relevant tunneling time scale through the classically forbidden region. |
|---|