EXPERIMENTAL AND THEORETICAL STUDIES OF THE ELECTRONIC STRUCTURES OFAuAl2ANDPtGa2

L.-S. Hsu, G. Y. Guo, J. D. Denlinger and J. W. Allen
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L.-S. Hsu: Department of Physics, National Chang-Hua University of Education, Chang-Hua 500, Taiwan, ROC
G. Y. Guo: Department of Physics, National Taiwan University, Taipei 106, Taiwan, ROC
J. D. Denlinger: Randall Laboratory, University of Michigan, Ann Arbor, Michigan 48109-1120, USA
J. W. Allen: Randall Laboratory, University of Michigan, Ann Arbor, Michigan 48109-1120, USA

Surface Review and Letters (SRL), 2002, vol. 09, issue 02, 1251-1255

Abstract: Synchrotron-radiation-excited angle-resolved photoemission spectra for the (100) and (111) faces ofAuAl2and the (111) face ofPtGa2are presented, along with derived experimental dispersion relations. These bands are compared with those obtained from the first-principles theoretical band-structure calculations. The total densities of states at the Fermi energy for these two materials are compared with those obtained from the specific-heat measurements. The energy variations of Au and Pt 5d bands forAuAl2andPtGa2, respectively, show atomic-like behavior in the photon-energy range of 80–220 eV.

Date: 2002
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DOI: 10.1142/S0218625X02003652

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