ANGLE-RESOLVED PHOTOEMISSION SPECTRA CALCULATIONS IN NONMAGNETIC ALLOYS

B. Ginatempo
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B. Ginatempo: Dipartimento di Fisica, Università di Messina, and Unità INFM-Messina, Salita Sperone 31, 98166 Messina, Italy

Surface Review and Letters (SRL), 1996, vol. 03, issue 05n06, 1733-1747

Abstract: The relativistic theory of angle-resolved photoemission from nonmagnetic metal surfaces is reviewed. The problems arising from the application of existing theories to multicomponent systems are analyzed, in order to find out which information about the electronic structure can be univocally extracted from a detailed comparison between experiments and theory. In order to illustrate the theoretical points, angle-resolved photoemission spectra calculations, for the spin-polarized case, are presented for the ordered and disorderedCu3Au(1,0,0) surface. The conclusion is that, notwithstanding their drawbacks, photoemission calculations are an essential tool for understanding the experiments, and that very small details of the photoemission spectra can be related to the order-disorder transition.

Date: 1996
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DOI: 10.1142/S0218625X96002679

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