Multiband model for tunneling in MgB2 junctions
By A. Brinkman, A. Golubov, H. Rogalla, O. Dolgov, J. Kortus, Y. Kong, O. Jepsen, O. Andersen. 2001
250 citations recorded by the source corpus.
A theoretical model for quasiparticle and Josephson tunneling in multiband superconductors is developed and applied to MgB2-based junctions. The gap functions in different bands in MgB2 are obtained from an extended Eliashberg formalism, using the results of band structure calculations. The temperature and angle dependencies of MgB2 tunneling spectra and the Josephson critical current are calculated. The conditions for observing one or two gaps are given. We argue that the model may help to settle the current debate concerning two-band superconductivity in MgB2.
Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/06a7f8e62b8400502d4a8c5b585b6b59201325e9
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In Condensed Matter Physics
In Electronic, Optical and Magnetic Materials
Citations in the corpus
- London penetration depth in iron-based superconductors (2011, background): “(30) 2(0) = 4ˇe2N(0)v2 c2 : (31) 3.2. Eilenberger two-gap Scheme: The - model The full-blown microscopic approach based on the Eliashberg theory is quite involved and not easy for the data analysis [60, 61, 62, 63]. Hence, the need for a relatively simple but justiable, self-consistent and eective ”
- Two-band superconductor magnesium diboride (2008, methodology): “9 mV was predicted in ab-to-ab junctions for σ -to-π tunneling [153], unless the π -gap contribution could be suppressed.”
- Magnetic penetration depth in unconventional superconductors (2006, background): “They are also close to the predicted theoretical values [37].”