Surface states of clean and metal-overlayer-covered Cr(001) films
- 15 January 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 31 (2), 1154-1156
- https://doi.org/10.1103/physrevb.31.1154
Abstract
Electronic-structure calculations for a clean Cr(001) film and for Cr(001) films covered with Au, Pt, or Ir monolayers predict a surface band localized on the outer Cr layer near the Fermi level. The high density of surface states in the Au adsorption case may help explain the recent observation of 3-K superconductivity in Au-Cr-Au sandwiches. The stability of the surface band against overlayer adsorption indicates the necessity of refining the test usually used to identify spectroscopic peaks as surface states.Keywords
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