Journal
SURFACE SCIENCE
Volume 547, Issue 1-2, Pages 157-161Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.susc.2003.09.033
Keywords
synchrotron radiation photoelectron spectroscopy; semiconducting surfaces; stepped single crystal surfaces; sulphides; photoelectron emission; electron-solid scattering and transmission; inelastic
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The surface core level shifts have been measured and interpreted for cleaved FeS2 {1 0 0}. A new feature has been observed at about 2.0 eV from the S 2p bulk line on its low binding energy side. This small peak is the most surface sensitive component. The origin of this feature is thought to be the breakage of sulphur-sulphur bonds. The strongest surface peak is ascribed to the fracture of the Fe-S bond. An estimate for the effective attenuation lengths of photoelectrons in pyrite at kinetic energies 40, 180 and 610 eV supports the interpretation of the features. (C) 2003 Elsevier B.V. All rights reserved.
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