| Autor: |
Mazin II; Center for Computational Materials Science, Naval Research Laboratory, Washington, DC 20375-5000, USA., Andersen OK, Jepsen O, Dolgov OV, Kortus J, Golubov AA, Kuz'menko AB, Van Der Marel D |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2002 Sep 02; Vol. 89 (10), pp. 107002. Date of Electronic Publication: 2002 Aug 19. |
| DOI: |
10.1103/PhysRevLett.89.107002 |
| Abstrakt: |
A large number of experimental facts and theoretical arguments favor a two-gap model for superconductivity in MgB2. However, this model predicts strong suppression of the critical temperature by interband impurity scattering and, presumably, a strong correlation between the critical temperature and the residual resistivity. No such correlation has been observed. We argue that this fact can be understood if the band disparity of the electronic structure is taken into account, not only in the superconducting state, but also in normal transport. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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