It is the saturation of the transition temperature in the range of 24 K for known materials in the late sixties that triggered the search for additional materials offering new coupling mechanisms leading in turn to higher 's. As a result of this stimulation, superconductivity in organic matter was discovered in tetramethyl-tetraselenafulvalene-hexafluorophosphate, , in 1979, in the laboratory founded at Orsay by Professor Friedel and his colleagues in 1962. Although this conductor is a prototype example for low-dimensional physics, we mostly focus in this article on the superconducting phase of the ambient-pressure superconductor , which has been studied most intensively among the TMTSF salts. We shall present a series of experimental results supporting nodal d-wave symmetry for the superconducting gap in these prototypical quasi-one-dimensional conductors.
La saturation de la température de transition supraconductrice vers 24 K à la fin des années soixante a stimulé la recherche de nouveaux matériaux avec l'espoir de trouver de nouveaux mécanismes de couplage, conduisant à des plus élevées. Suite à cette stimulation, la supraconductivité dans la matière organique a été découverte dans le sel organique tétraméthyl-tétraséléfulvalène-hexafluorophosphate, , en 1979 à Orsay dans le laboratoire fondé par le professeur Friedel et ses collègues en 1962. Bien que ce conducteur soit un prototype pour la physique à basse dimension, nous nous intéresserons dans cet article essentiellement à la phase supraconductrice du supraconducteur à pression ambiante , lequel parmi les sels de TMTSF est celui dont la phase supraconductrice a été étudiée de la manière la plus approfondie. Nous présenterons pour ce prototype des conducteurs quasi-unidimensionnels une série de résultats expérimentaux en faveur d'une symétrie nodale de type d du gap supraconducteur.
Mots-clés : Conducteurs unidimensionnels, Supraconductivité organique, Sels de Bechgaard, (TMTSF)2ClO4
Denis Jerome 1; Shingo Yonezawa 2
@article{CRPHYS_2016__17_3-4_357_0, author = {Denis Jerome and Shingo Yonezawa}, title = {Novel superconducting phenomena in quasi-one-dimensional {Bechgaard} salts}, journal = {Comptes Rendus. Physique}, pages = {357--375}, publisher = {Elsevier}, volume = {17}, number = {3-4}, year = {2016}, doi = {10.1016/j.crhy.2015.12.003}, language = {en}, }
Denis Jerome; Shingo Yonezawa. Novel superconducting phenomena in quasi-one-dimensional Bechgaard salts. Comptes Rendus. Physique, Physique de la matière condensée au XXIe siècle: l’héritage de Jacques Friedel, Volume 17 (2016) no. 3-4, pp. 357-375. doi : 10.1016/j.crhy.2015.12.003. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2015.12.003/
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