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Publication Citation: Comment on Field emission as a probe of the surface density of states

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Author(s): David R. Penn;
Title: Comment on Field emission as a probe of the surface density of states
Published: July 15, 1976
Abstract: It is shown that the primary contribution to the field-emission current comes from electrons with total momentum equal to zero in a direction parallel to the metal surface and that the field-emission current measures the density of states at a point several angstroms from the metal surface. An explicit expression is derived for the error made in using the transfer-Hamiltonian technique to calculate the tunneling probability of an electron through a one-dimensional barrier, and it is pointed out that the error is small in the case of field emission.
Citation: Physical Review B (Condensed Matter and Materials Physics)
Volume: 14
Issue: 2
Pages: pp. 849 - 853
Research Areas: Surface Physics