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Superconductivity in MgB2 and TaB2: A Full-Potential Electronic Structure Comparison | | Prabhakar P. Singh
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30 Apr 2001 | | Subject: | Superconductivity | cond-mat.supr-con | | Abstract: | We present a comparison of electronic structure of MgB2 and TaB2, the two new superconductors, as well as VB2, calculated using full-potential, density- functional-based methods in P6/mmm crystal structure. Our results, described in terms of (i) density of states (DOS), (ii) band-structure, and (iii) the DOS and the electronic charge density in a small energy window around the Fermi energy EF. In particular, the charge density around EF in MgB2 and TaB2 show striking similarity as far as the B plane is concerned. A comparison of their band-structures, coupled with l-character analysis, indicates that TaB2 has substantially more p-character than VB2 along A-L and H-A directions near EF. | | Source: | arXiv, cond-mat/0104580 | | Services: | Forum | Review | PDF | Favorites | |
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