منابع مشابه
Interband proximity effect and nodes of superconducting gap in Sr2RuO4.
The power-law temperature dependences of the specific heat, the nuclear relaxation rate, and the thermal conductivity suggest the presence of line nodes in the superconducting gap of Sr2RuO4. These recent experimental observations contradict the scenario of a nodeless (k(x)+ik(y))-type superconducting order parameter. We propose that interaction of superconducting order parameters on different ...
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E. Hassinger, P. Bourgeois-Hope, H. Taniguchi, S. René de Cotret, G. Grissonnanche, M. S. Anwar, Y. Maeno, N. Doiron-Leyraud, and Louis Taillefer Département de Physique & RQMP, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany Canadian Institute for Advanced Research, Toronto, Ontario M5G 1Z8, Canada Departm...
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Using general symmetry arguments and model calculations we analyze the superconducting gap in materials with multiple Fermi-surface pockets, with applications to iron pnictides. We show that the gap in the pnictides has an extended s-wave symmetry but is either nodeless or has nodes, depending on the interplay between intraband and interband interactions. We argue that the nodes in the gap emer...
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The thermal conductivity of a YBa2Cu3O6.9 detwinned single crystal has been studied as a function of the relative orientation of the crystal axes and a magnetic field rotating in the Cu-O planes. Measurements were carried out at several different temperatures below Tc (0.5 K < T< 25 K) and at a fixed field of 30 kOe. A four-fold symmetry characteristic of a superconducting gap with nodes at odd...
متن کاملHorizontal line nodes in superconducting Sr
We analyze the possibilities of triplet pairing in Sr 2 RuO 4 based upon an idea of interlayer coupling. We have considered two models differing by the effective interactions. In one model the quasi-particle spectra have horizontal line nodes on all three Fermi surface sheets, while in the other the spectra have line or point nodes on the α and β sheets and no nodes on the γ sheet. Both models ...
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ژورنال
عنوان ژورنال: Journal of Magnetism and Magnetic Materials
سال: 2007
ISSN: 0304-8853
DOI: 10.1016/j.jmmm.2006.10.250