First-principles calculations of the surface relaxation and electronic structure of Zr(0001)
- Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States) Institute of Atomic Energy, Kyoto University, Uji, Kyoto 611 (Japan)
- Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)
The multilayer relaxations of the Zr(0001) surface and the surface electronic structure are studied using first-principles total-energy and force calculations. The distance between the outermost two layers is 4.4--4.7 % smaller than the ideal interlayer spacing, while inner layers show oscillatory relaxations. We examined two possible termination sequences for the surface and found that the hcp surface termination is more stable by about 0.06 eV per surface atom as compared to the fcc terminated structure. We observed an increase in the local density of states (LDOS) for the surface atoms around the Fermi level relative to the bulk atoms. The increase in the LDOS is found to be closely related to the existence of surface states and resonances around the Fermi level.
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 7229466
- Journal Information:
- Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 50:11; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360104* -- Metals & Alloys-- Physical Properties
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY LEVELS
FCC LATTICES
FERMI LEVEL
HCP LATTICES
HEXAGONAL LATTICES
METALS
POTENTIALS
RELAXATION
SURFACE POTENTIAL
TRANSITION ELEMENTS
ZIRCONIUM