Target-current spectroscopy of restructuring 5d-transition-metal surfaces as a tool for testing bulk-band-structure calculations
Experimental target current spectroscopy (TCS) data of iridium and platinum are presented for the unreconstructed and the reconstructed (100) surface modifications. The effects of reconstruction on the coupling of free electrons to bulk bands are discussed with reference to a fully relativistic bulk-band-structure calculation. A TCS-based method for absolute work function determinations is presented. For the unreconstructed (100) surfaces of iridium and platinum, work function values of 6.1 +/- 0.1 eV and 5.5 +/- 0.2 eV, respectively, are obtained. Reconstruction induced changes of the work function amount to -0.1 eV for platinum and -0.2 eV for iridium.
Bibliographic Reference: Article: Physical Review B, Vol. 45 (1992) No. 8, pp. 4390-4397
Record Number: 199210731 / Last updated on: 1994-12-02
Original language: en
Available languages: en