Interior gap superconductivity in heavy fermions

We study the possibility of interior gap superconductivity in two-band systems in the presence of hybridization. This type of superconductivity arises in a system composed of two types of quasi-particles and it develops at the Fermi surface of the quasi-particles with the smallest Fermi momentum. Po...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2008-04, Vol.403 (5), p.764-765
Main Authors: Continentino, M.A., Tavares, Igor
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron states
Exact sciences and technology
Fermi surface: calculations and measurements
effective mass, g factor
Physics
Quantum critical point
Quantum first order transition
Superconducting materials (excluding high-tc compounds)
Superconductivity
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Summary:We study the possibility of interior gap superconductivity in two-band systems in the presence of hybridization. This type of superconductivity arises in a system composed of two types of quasi-particles and it develops at the Fermi surface of the quasi-particles with the smallest Fermi momentum. Possible candidates to present this phenomenon are heavy fermion materials. We find that mixing among the particles gives rise to a new superconducting state with gapless excitations.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2007.10.313