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Nodeless d-wave superconductivity in a quasi-one-dimensional organic superconductor under anion order

Hiroshi Shimahara
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Abstract

We propose a mechanism of nodeless d-wave superconductivity in a quasi-one-dimensional organic superconductor under anion order. It is shown that split of the Fermi surfaces due to the anion order eliminates the line nodes of a d-wave gap function on the Fermi surfaces, and a small finite energy gap appears in the quasi-particle excitations of superconductivity. We discuss that temperature dependences of thermal conductivity and NMR relaxation rate observed in a quasi-one-dimensional organic superconductor (TMTSF)2ClO4 can be explained consistently by the small energy gap.

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Hiroshi Shimahara. 1999-12-08. Nodeless d-wave superconductivity in a quasi-one-dimensional organic superconductor under anion order. https://doi.org/10.1103/physrevb.61.r14936

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