Transit-time oscillations in nanoscale vacuum diode with a pure resistive load
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2026
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866911404245647360 |
|---|---|
| author | Alexandersson, Bjartþhór Steinn Torfason, Kristinn Manolescu, Andrei Valfells, Ágúst |
| author_facet | Alexandersson, Bjartþhór Steinn Torfason, Kristinn Manolescu, Andrei Valfells, Ágúst |
| contents | We examine the Ramo current in a nanoscale planar vacuum diode undergoing field emission in the presence of a DC voltage supply and an external resistor. We describe a simple mechanism for generating persistent current oscillations in the diode due to the voltage drop across the external resistor (beam loading) which reduces the total field and inhibits the emission. The amplitude and the frequency, which is in the THz domain, depend on the operating parameters of the diode. Molecular dynamics simulations are used to find the characteristics and physical basis of the mechanism, and a simple analytical model is presented, in good agreement with the simulation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_20360 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Transit-time oscillations in nanoscale vacuum diode with a pure resistive load Alexandersson, Bjartþhór Steinn Torfason, Kristinn Manolescu, Andrei Valfells, Ágúst Mesoscale and Nanoscale Physics Accelerator Physics We examine the Ramo current in a nanoscale planar vacuum diode undergoing field emission in the presence of a DC voltage supply and an external resistor. We describe a simple mechanism for generating persistent current oscillations in the diode due to the voltage drop across the external resistor (beam loading) which reduces the total field and inhibits the emission. The amplitude and the frequency, which is in the THz domain, depend on the operating parameters of the diode. Molecular dynamics simulations are used to find the characteristics and physical basis of the mechanism, and a simple analytical model is presented, in good agreement with the simulation. |
| title | Transit-time oscillations in nanoscale vacuum diode with a pure resistive load |
| topic | Mesoscale and Nanoscale Physics Accelerator Physics |
| url | https://arxiv.org/abs/2601.20360 |