Electron-phonon coupling in anion metallic solids and superconducting MgB2
- Yin, DL
- Yang, F
- Qi, Z
- Han, RS
Publication date
January 2002
DOI Publisher
chinese physics letters ISSN
0256-307X Journal
issn:0256-307XAbstract
We analyse the Hopfield factor of the newly found superconductor MgB2 using the linear muffin-tin orbital method. Based on a uniform transferred charge density model raised, it is shown from our calculation that the high difference of electronegativity between boron and magnesium favours the high l(l + 1) angular momentum hybridization and then the Hopfield factor. Our analysis is consistent with experimental results. Comparisons with cuprate superconductors are also discussed.Physics, MultidisciplinarySCI(E)中国科学引文数据库(CSCD)0ARTICLE81176-11781
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