STUDY ON THE ELECTRONIC STRUCTURE OF HIGH-TC SUPERCONDUCTOR MgB2 | Zendy

Tan Ming-Qiu | Zendy; Tao Xiang-Ming | Zendy

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STUDY ON THE ELECTRONIC STRUCTURE OF HIGH-TC SUPERCONDUCTOR MgB2

Author(s) -

Tan Ming-Qiu,

Tao Xiang-Ming

Publication year - 2001

Publication title -

acta physica sinica

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.

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