Abstract
An intensive triplet line is revealed in the total current spectrum (TCS) of a reconstructed surface. The nature of the observed structure in the TCS is discussed in comparison with previously reported data from photoemission, inverse photoemission and theoretical investigations. It is found to be a consequence of the electron transitions into an Fe 3d band of empty states. Energy locations of Fe 3d-band extrema ( and above the bottom of the conduction band) and its splitting are estimated from the proposed schemes of electron transitions.
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