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Drozdov, A.P., Kong, P.P., Minkov, V.S., Besedin, S.P., Kuzovnikov, M.A., Mozaffari, S., et al. (2019) Superconductivity at 250K in Lanthanum Hydride under High Pressure. Nature, 569, 528-531.
https://doi.org/10.1038/s41586-019-1201-8

has been cited by the following article:

• TITLE: Study of the Isotope Effects of Novel Superconducting LaH10-LaD10 and H3S-D3S Systems

  AUTHORS: Hassan H. Mohammed

  KEYWORDS: Isotope Effects, Superconductivity, Strong Coupling Coefficient, High Pressure

  JOURNAL NAME: Journal of High Energy Physics, Gravitation and Cosmology, Vol.7 No.4, August 27, 2021

  ABSTRACT: This paper is directed to study the isotope effects of some superconducting materials that have a strong coupling coefficient λ > 1.5, and focuses on new superconducting materials whose critical temperature is close to room temperature, specifically LaH10-LaD10 and H3S-D3S systems. The Eliashberg-McMillan (EM) model and the recent Gor’kov-Kresin (GK) model for evaluating the isotope effects coefficient α were examined for these systems. The predicted values of α as a function of pressure, as compared to experimental values led to inference that these two models, despite their importance and simplicity, cannot be considered complete. These models can be used to calculate isotope effect of most superconducting materials with strong coupling coefficients but with critical reliability. The significance of studying the isotope effect lies in the possibility of identifying the interatomic forces that control the properties of superconducting materials such as electrons-mediated phonons and Coulomb interactions.