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Millan, J. Samuel; Perez, Luis A.; Wang Chumin, E-mail: chumin@servidor.unam.mx2005
AbstractAbstract
[en] In this Letter, we consider a two-dimensional Hubbard model that includes a second-neighbor correlated hopping interaction, and we find a triplet p-wave superconducting ground state within the BCS formalism. A small distortion of the square-lattice right angles is introduced in order to break the degeneracy of kx+/-ky oriented p-wave pairing states. For the strong coupling limit, analytical results are obtained. An analysis of the superconducting critical temperature reveals the existence of an optimal electron density and the gap ratio exhibits a non-BCS behavior. Finally, the particular case of strontium ruthenate is examined
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S0375-9601(05)00006-X; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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ALKALINE EARTH METAL COMPOUNDS, CHALCOGENIDES, CRYSTAL MODELS, ELECTRIC CONDUCTIVITY, ELECTRICAL PROPERTIES, ENERGY LEVELS, MATHEMATICAL MODELS, MULTIPLETS, OXIDES, OXYGEN COMPOUNDS, PARTIAL WAVES, PARTICLE MODELS, PHYSICAL PROPERTIES, REFRACTORY METAL COMPOUNDS, RUTHENIUM COMPOUNDS, THERMODYNAMIC PROPERTIES, TRANSITION ELEMENT COMPOUNDS, TRANSITION TEMPERATURE
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