The three surface electronic states of Be(0001) have different symmetry as probed by high-resolution angle resolved photoemission (ARPES) with variable polarization synchrotron radiation. We probed the two (?? -M? and ?? -K) high symmetry directions and measured the Fermi surface cuts. Electron states of even or odd symmetry with respect to the crystal (and/or surface) mirror planes contribute to the photoemission intensity as a function of the light polarization and experimental geometry. The effects of the large surface relaxation of Be(0001) are directly reflected in the Fermi surface.
Surface electron bands and Fermi surface of Be(0001)
Vobornik I;Fujii J;Panaccione G;Rossi G
2005
Abstract
The three surface electronic states of Be(0001) have different symmetry as probed by high-resolution angle resolved photoemission (ARPES) with variable polarization synchrotron radiation. We probed the two (?? -M? and ?? -K) high symmetry directions and measured the Fermi surface cuts. Electron states of even or odd symmetry with respect to the crystal (and/or surface) mirror planes contribute to the photoemission intensity as a function of the light polarization and experimental geometry. The effects of the large surface relaxation of Be(0001) are directly reflected in the Fermi surface.File in questo prodotto:
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