Electronic structure of MnSi: The role of electron-electron interactions

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Carbone, F. and Zangrando, M. and Brinkman, A. and Nicolaou, A. and Bondino, F. and Magnano, E. and Nugroho, A.A. and Parmigiani, F. and Jarlborg, Th. and Marel, D. van der (2006) Electronic structure of MnSi: The role of electron-electron interactions. Physical Review B: Condensed matter and materials physics, 73 (8). 085114. ISSN 1098-0121

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Abstract:We present an experimental study of the electronic structure of MnSi. Using x-ray absorption spectroscopy (XAS), x-ray photoemission, and x-ray fluorescence, we provide experimental evidence that MnSi has a mixed valence ground state. We show that self-consistent local density approximation supercell calculations cannot replicate the XAS spectra of MnSi, while a good match is achieved within the atomic multiplet theory assuming a mixed valence ground state. We discuss the role of the electron-electron interactions in this compound and estimate that the valence fluctuations are suppressed by a factor of 2.5, which means that the Coulomb repulsion is not negligible
Item Type:Article
Copyright:© 2006 The American Physical Society
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/74260
Official URL:http://dx.doi.org/10.1103/PhysRevB.73.085114
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