Thermally induced core-electron binding-energy shifts in transition metals: An experimental investigation of Ta(100)

Journal Article · Sun Dec 01 04:00:00 EST 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.17118· OSTI ID:404040

Riffe, D M ^[1]; Hale, W; Kim, B; Erskine, J L ^[2]

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1. Department of Physics, Utah State University, Logan, Utah 84322-4415 (United States)
2. Department of Physics, University of Texas, Austin, Texas 78712 (United States)

High-resolution photoemission spectra from the 4{ital f}{sub 7/2} levels of Ta(100) have been obtained between 77 K and room temperature. The data show an increase in both the surface and bulk core-level binding energies (BE{close_quote}s) as the temperature is raised: between 77 and 293 K the bulk and surface BE{close_quote}s increase by 31{plus_minus}3 and 13{plus_minus}2 meV, respectively. A model calculation of the bulk binding-energy increase, which is based upon the lattice expansion of the solid, is in good agreement with the experimental results and indicates that the shifts arise from both initial- and final-state effects that are of comparable magnitude. The model is further used to estimate thermally induced shifts for the whole 5{ital d} transition-metal series. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 404040
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 23 Vol. 54; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BAND STRUCTURE
BINDING ENERGY
CORE LEVELS
ELECTRONIC STRUCTURE
ENERGY-LEVEL DENSITY
LATTICE PARAMETERS
PHOTOEMISSION
TANTALUM
ULTRAVIOLET SPECTRA