Electronic band dispersion and pseudogap in quasicrystals: Angular-resolved photoemission studies on icosahedral Al{sub 70}Pd{sub 21.5}Mn{sub 8.5}
Journal Article
·
· Physical Review Letters
- Department of Physics and Ames Laboratory, United States Department of Energy, Iowa State University, Ames, Iowa 50011 (United States)
Angular-resolved photoelectron spectra from the fivefold surface of single-grain icosahedral Al{sub 70}Pd{sub 21.5}Mn{sub 8.5} exhibit a quasiperiodic dispersion of 300 meV at 2.3 eV binding energy. Low energy electron diffraction studies confirm quasicrystalline order at the surface. A distinct pseudogap feature is observed with a density of states near the Fermi level decreasing as a square-root power law. {copyright} {ital 1995 The American Physical Society.}
- Research Organization:
- Ames National Laboratory
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 277356
- Journal Information:
- Physical Review Letters, Vol. 75, Issue 24; Other Information: PBD: Dec 1995
- Country of Publication:
- United States
- Language:
- English
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