Abstract
The Ta N7-VV Auger spectrum of TaC(111) has been measured in coincidence with photoemission from the bulk and surface shifted Ta 4f7/2 core levels. Good agreement is found between the surface Auger spectrum and a self-convolution of the density of states (SCDOS) at surface Ta sites determined by a first-principles calculation. The bulk spectrum disagrees with the bulk SCDOS but is well described by an incoherent sum of the bulk SCDOS and the surface spectrum. A novel off-site Auger decay mechanism, first observed on Ta(100), accounts for these observations.
Original language | English (US) |
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Pages (from-to) | 2247-2250 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 68 |
Issue number | 14 |
DOIs | |
State | Published - 1992 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)