Open AccessSTUDY ON THE ELECTRONIC STRUCTURE OF HIGH-TC SUPERCONDUCTOR MgB2
Author(s) -
Manqing Tan,
Tao Xiang-Ming
Publication year - 2001
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.50.1193
Subject(s) - magnesium diboride , superconductivity , condensed matter physics , electronic structure , electronic band structure , density of states , quasi fermi level , fermi level , materials science , electron , semimetal , physics , band gap , critical current , quantum mechanics
We report a first-principles local density approximation band structure calculation on the electronic structure of high-TC superconductor MgB2.It is revealed that the band structure of magnesium diboride is of metallic type with a wide valence band.The density of states of electrons at Fermi energy is only about 0.72 (states/eV).We conclude that the present calculation excludes the possibility of BCS mechanism in MgB2.