File:Cold emission (field off).png
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English: The demonstration of the potential barrier at the surface of metal. In the metal electrons fill the energy levels up to the Fermi energy, and there is a potential barrier stretching from the surface of the metal to infinity. As the height of the barrier (U_0) is greater than the Fermi energy (which is the max energy of electrons), electrons cannot tunnel through the barrier and escape the metal. |
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| Source | Own work |
| Author | Hayk Sargsyan physicist |
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| current | 19:15, 22 January 2015 | | 1,650 × 1,250 (56 KB) | Hayk28 (talk | contribs) | User created page with UploadWizard |
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