Photoemission Electronic States of (Mn1-xFex)5Si3

B. Penc a, R. Zaleckib, A. Jezierskic, A. Szytuła a, A. Kołodziejczyk b and V. Ivanovd aM. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Cracow, Poland bDepartment of Solid State Physics, AGH University of Science and Technology, Mickiewicza 30, 30-059 Cracow, Poland cInstitute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland dGeneral Physics Institute, Russian Academy of Sciences, Vavilov 38, 117-742 Moscow, Russia

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Received: 28 09 2004; revised version: 04 04 2005;

The core-level and valence band electronic states studies of single crystalline transition metal silicides (Mn1-xFex)5Si3 (x=0 and 0.05) by the X-ray and ultraviolet photoemission spectroscopies are reported. The Mn 2p core-level spectra for both compounds were ascribed to the relevant Mn sites in their crystal structure. The valence band spectra were compared with the result of ab-initio band calculations using the tight-binding linear muffin-tin orbital method. It was concluded that the enhancement of the spectral density within the 2 eV binding energy region below the Fermi energy comes from the effect of strongly correlated Mn 3d electrons.

DOI: 10.12693/APhysPolA.107.967 PACS numbers:79.60.-i, 71.20.Gj, 71.15.Ap