Evidence of Electron-Electron Scattering from Field Emission

Abstract

A small tail above the Fermi energy has been found in the energy distribution of field-emitted electrons on three crystal planes of clean tungsten, at 20\ifmmode^\circ\else\textdegree\fi{}K. The current in the tail is proportional to the square of total probe hole current, and is interpreted as resulting from electron-electron scattering in the metal.