Fabrication of β-Mo2C ultra-thin films by thermal annealing of Molybdenum / Carbon heterostructures

HABERKORN, N.

Materials Letters: X

Elsevier

Año: 2019 vol. 1 p. 10004 - 10007

2590-1508

Molybdenum carbide ultrathin thin films are obtained by thermal annealing of molybdenum/amorphous carbon heterostructures. The samples were grown at room temperature by magnetron sputtering on Si (100). As-grown samples display superconductivity, which could be related to the coexistence of crystalline and amorphous Mo. Interfacial beta-Mo2C phase is observed after thermal annealing at 1033 K. Annealed samples display sharp superconducting transitions. A difference in the maximum critical temperature observed in trilayers and multilayers could be related to superconducting coupling between beta-Mo2C layers.