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Observation of magnetic splitting in XPS MnL-spectra of Co2MnSn and Pd2MnSn Heusler alloys |
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| Authors: | Y.M. Yarmoshenko M.I. Katsnelson E.I. Shreder E.Z. Kurmaev A. Slebarski S. Plogmann T. Schlathölter J. Braun M. Neumann |
| Affiliation: | Institute of Metal Physics, Russian Academy of Sciences Ural Division, GSP-170, 620219, Yekatarinburg, Russia Institute of Physics, University of Silesia, 40-007, Katowice, Poland Universit?t Osnabrück, Fachbereich Physik, Barbarastrasse 7, 49069, Osnabrück, Germany |
| Abstract: | The XPS MnL-spectra of Co2MnSn, a nearly half-metallic ferromagnet (HMF) and Pd2MnSn were investigated. The most drastical feature of the spectra observed is the well-defined magnetic splitting of the Mn 2p 3/2 , 2p 1/2 lines. This gives direct evidence of the existence of well-defined local magnetic moments in Heusler alloys in comparison with other itinerant-electron ferromagnets. The calculations of Mn2p XPS spectra of these materials were carried out using a fully relativistic generalization of the one-step model of photoemission and show excellent agreement with experiment. Received: 31 October 1997 / Received in final form: 28 November 1997 / Accepted: 18 December 1997 |
| Keywords: | PACS. 71.20.Be Transition metals and alloys - 75.20.Hr Local moments in compounds and alloys Kondo effect, valence fluctuations, heavy fermions |
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