Metastable superconductivity of Mo/MoO3−x interface

• Published in: Physica. C, Superconductivity Vol. 558; pp. 25 - 29
• Main Authors: Palnichenko, A.V., Zver‘kova, I.I., Shakhrai, D.V., Vyaselev, O.M.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15-03-2019; Elsevier BV
• Subjects: Dynamic magnetic susceptibility; Electrical resistance; High temperature interfacial superconductivity; Magnetic permeability; Magnetism; Molybdenum oxides; Molybdenum trioxide; Molybdenum-molybdenum oxide interface; Superconductivity; Superconductors; X-ray diffraction; Electrical resistance; X-ray diffraction; Molybdenum-molybdenum oxide interface; Dynamic magnetic susceptibility; High temperature interfacial superconductivity
• ISSN: 0921-4534; 1873-2143
• DOI: 10.1016/j.physc.2019.01.006

•Mo/MoO3−x interface was formed by surface oxidation of Mo.•Magnetic susceptibility and electrical resistance of the interface was studied.•Superconductivity at 38–55 K of the Mo/MoO3−x interfaces was observed.•The superconducting interface is instable under normal conditions.
Superconducting at 38 ≤ T ≤ 55 K metastable Mo/MoO3−x, 0 ≤ x ≤ 0.25, interfaces have been prepared by means of a redox reaction of Mo-metal with powdered α-MoO3. The ac magnetic susceptibility and electrical resistance measurements suggest that the Mo/MoO3−x interfacial layer is consisting of weakly connected superconducting regions.