Bonding Nature in MgB2

E. Nishibori; M. Takata; M. Sakata; H. Tanaka; T. Muranaka; J. Akimitsu

doi:10.1143/JPSJ.70.2252

Bonding Nature in MgB2

Materials Science 2009-11-07 v1

Authors: E. Nishibori , M. Takata , M. Sakata , H. Tanaka , T. Muranaka , J. Akimitsu

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Abstract

The accurate charge density of MgB2 was observed at room temperature(R.T.) and 15K by the MEM(Maximum Entropy Method)/Rietveld analysis using synchrotron radiation powder data. The obtained charge density clearly revealed the covalent bonding feature of boron forming the 2D honeycomb network in the basal plane, on the other hand, Mg is found to be in divalent state. A subtle but clear charge concentration was found on boron 2D sheets at 15K, which should be relating to superconductivity.

Keywords

mgb2 superconductivity electronic structure of materials hydrogen storage and hydrides

Cite

@article{arxiv.cond-mat/0105555,
  title  = {Bonding Nature in MgB2},
  author = {E. Nishibori and M. Takata and M. Sakata and H. Tanaka and T. Muranaka and J. Akimitsu},
  journal= {arXiv preprint arXiv:cond-mat/0105555},
  year   = {2009}
}

Comments

4 pages, 3 figures

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