Electron band structure of a rare-earth metal: Tb(0001)
- College of Engineering and Applied Science, State University of New York, Stony Brook, NY (USA)
- Department of Physics, Queens College, City University of New York, Flushing, NY (USA)
- Institute of Physics, Aarhus University, DK-8000 Aarhus C (Denmark) Max-Planck-Institut fuer Festkoerperforschung, Postfach 800665, D-7000 Stuttgart 80 (Federal Republic of Germany)
The electron band structure of Tb metal has been determined at room temperature by means of angle-resolved photoemission experiments on Tb(0001). For the first time in any rare-earth metal, the full dispersed 6{ital s}-5{ital d}{sub 3{ital z}}{sup 2}{minus}1-type {Delta}{sub 1} band has been experimentally mapped along the {Gamma}{Delta}{ital A} line. The two critical points of the {Delta}{sub 1} band have been determined at {Gamma}{sub 1}{sup +}={minus}6.9 eV and {Gamma}{sub 4}{sup {minus}}={minus}3.6 eV. Dispersion and width of the initial {Delta}{sub 1} band are in good agreement with relativistic linear muffin-tin orbitals calculations, but the absolute energy position deviates by {minus}1.5 eV from theory. ({Gamma}{sub 1}{sup +}(calc)={minus}5.3 eV and {Gamma}{sub 4}{sup {minus}}(calc)={minus}2.3 eV.) The initial {Delta}{sub 1} band lies well below the Fermi level, also in agreement with theory, and the experimental value of the 4{ital f} binding energy is about {minus}2.6 eV.
- DOE Contract Number:
- FG02-86ER45239
- OSTI ID:
- 7025770
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:17; ISSN 0163-1829; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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