Surface State of Gd(0001) Films on W(110): Scanning Tunneling Spectroscopy Study |
| M. Bode, R. Pascal, M. Getzlaff and R. Wiesendanger Institute of Applied Physics and Microstructure Research Center, University of Hamburg, Jungiusstrasse 11, 20355 Hamburg, Germany |
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| The surface electronic structure of Gd(0001)/W(110) has been studied by scanning tunneling spectroscopy in dependence of the coverage. An exchange split dz2-like surface state which is well known from photoemission experiments was already found for coverages as low as 2 ML. The exchange splitting was found to increase with increasing coverage up to the fourth ML. For higher coverages the electronic structure remains constant. We found spectra that are shifted by ≈ 25 meV, possibly due to stacking faults. |
| DOI: 10.12693/APhysPolA.93.273 PACS numbers: 73.20.At, 68.55.Jk, 61.16.Ch |