Journal
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
Volume 456, Issue 1-2, Pages 92-101Publisher
ELSEVIER
DOI: 10.1016/j.physc.2007.01.027
Keywords
MgB2; Fermi surface; band structure; quantum oscillations
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Funding
- Engineering and Physical Sciences Research Council [EP/C511778/1] Funding Source: researchfish
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Our understanding of the superconducting properties of MgB2 is strongly linked to our knowledge of its electronic structure. In this paper we review experimental measurements of the Fermi surface parameters of pure and M-doped MgB2 using the de Haas-van Alphen (dHvA) effect. In general, the measurements are in excellent agreement with the theoretical predictions of the electronic structure, including the strength of the electron-phonon coupling on each Fermi surface sheet. For the At doped samples, we are able to measure how the band structure changes with doping. These results are in excellent agreement with calculations based on the virtual crystal approximation. We also review work on the dHvA effect in the superconducting state. (c) 2007 Elsevier B.V. All rights reserved.
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