Electronic structure of MgB$_2$: X-ray emission and absorption studies

E. Z. Kurmaev; I. I. Lyakhovskaya; J. Kortus; A. Moewes; N. Miyata; M. Demeter; M. Neumann; M. Yanagihara; M. Watanabe; T. Muranaka; J. Akimitsu

doi:10.1103/physrevb.65.134509

arXiv · cond-mat/0103487

Electronic structure of MgB$_2$: X-ray emission and absorption studies

E. Z. Kurmaev·I. I. Lyakhovskaya·J. Kortus·A. Moewes·N. Miyata·M. Demeter·M. Neumann·M. Yanagihara·M. Watanabe·T. Muranaka·J. Akimitsu

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Abstract

Measurements of x-ray emission and absorption spectra of the constituents of MgB$_2$ are presented. The results obtained are in good agreement with calculated x-ray spectra, with dipole matrix elements taken into account. The comparison of x-ray emission spectra of graphite, AlB$_2$, and MgB$_2$ in the binding energy scale supports the idea of charge transfer from $σ$ to $π$ bands, which creates holes at the top of the bonding $σ$ bands and drives the high-T$_c$

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E. Z. Kurmaev, I. I. Lyakhovskaya, J. Kortus, A. Moewes, N. Miyata, M. Demeter, M. Neumann, M. Yanagihara, M. Watanabe, T. Muranaka, J. Akimitsu. 2002-03-21. Electronic structure of MgB$_2$: X-ray emission and absorption studies. https://doi.org/10.1103/physrevb.65.134509

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