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Article Dans Une Revue Carbon Année : 2018

Graphene on TaC: Air tight protection of a superconducting surface

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Résumé

We report on the fabrication of a clean, stable in room atmosphere and superconducting surface consisting of graphene on tantalum carbide (TaC) obtained by high-temperature annealing of a tantalum thin film on SiC. Low temperature scanning tunneling spectroscopy reveals that the surface is superconducting with a superconducting order parameter up to 1.6 meV. In addition, atomically-resolved imaging establishes the chemical inertness of the surface. This result is achieved because few graphene layers protect the surface superconductivity of the buried superconducting TaC formed during the high-temperature annealing.
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hal-01877574 , version 1 (24-09-2018)

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L. Huder, Guy Trambly de Laissardière, G. Lapertot, A.G.M. G M Jansen, C. Chapelier, et al.. Graphene on TaC: Air tight protection of a superconducting surface. Carbon, 2018, 140, pp.592 - 595. ⟨10.1016/j.carbon.2018.09.003⟩. ⟨hal-01877574⟩
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