Inhomogeneous Charge Distribution and Superconductivity in the Boson-Fermion Model |
| Ż. Śledź and M. Mierzejewski
Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland |
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| Received: 6 11 2007; |
| We analyze a boson-fermion model that accounts for the electrostatic potential of the out-of-plane dopant atoms. We investigate whether this approach may explain recent experimental results obtained for the Bi-based high-temperature superconductors. We demonstrate that in contradistinction to purely fermionic models, even weak electrostatic potential of the dopant atoms may be responsible for a significant modulation of the superconducting order parameter. |
| DOI: 10.12693/APhysPolA.114.219 PACS numbers: 74.20.-z, 74.62.Dh |