Van Hove Singularity and Superconductivity in Disordered Sr2RuO4 |
| G. Litaka, J.F. Annettb and B.L. Györffyb a Department of Mechanics, Technical University of Lublin, Nadbystrzycka 36, 20-618 Lublin, Poland b H.H. Wills Physics Laboratory, University of Bristol, Tyndall Ave, Bristol BS8 1TL, United Kingdom |
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| On the basis of a simple model we analyse the influence of disorder on critical temperature Tc in p-wave superconductors. The disorder is treated by means of the coherent potential approximation and we focus our attention on the effect of a van Hove singularity near Fermi energy EF. For the appropriate values of its parameters our model reproduces the experimentally found behaviour of Sr2 RuO4. |
| DOI: 10.12693/APhysPolA.97.249 PACS numbers: 74.62.Dh, 74.25.Dw, 74.25.Fy |