Abstract
In this article, two topics of coherent electron emission are discussed. Coherent electrons emitted at different sites of a carbon nanotube generate Young's interference strips in a vacuum, which means that all the electrons emitted in different directions from one nanotube are coherent. The other topic is concerned with the electron emission from macroscopic coherent states in Nb superconductors; the energy width of these electrons is about 20 meV, which is an order of magnitude narrower than those of the conventional beams. By using this emitter, one can expect to improve the temporal coherence of the electron beams in a vacuum by factor 10.
| Original language | English |
|---|---|
| Pages (from-to) | 24-29 |
| Number of pages | 6 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 72 |
| Issue number | SUPPL.C |
| Publication status | Published - 2003 |
Keywords
- Carbon nanotube
- Field electron emission
- Macroscopic coherent states
- Superconductivity
- Young's interference
ASJC Scopus subject areas
- Physics and Astronomy(all)