Abstract
In general, conventional superconductivity and magnetism are competing phenomena. In some alloys this competition is a function of the concentration of the elements. Here we show that in the palladium alloys Pd\(_{1-c}\)(H/D/T)\(_{c}\) (Pd-ides) the increase in the concentration c of the ides: hydrogen, deuterium, tritium (H/D/T), lowers the predicted magnetism of amorphous palladium (a-Pd) gradually, allowing superconductivity to appear for \( c \approx 40\%\). This magnetism explains why superconductivity does not manifest for smaller values of c (\(c \le 40\%\)) in these Pd alloys. These results validate indirectly our predicted magnetism in the amorphous/porous palladium (a/p-Pd) providing a different strategy to explore the phase diagram of competing magnetic and superconducting phases.
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Acknowledgements
I.R. thanks DGAPA-UNAM for the postdoctoral fellowship. D.H.R. acknowledges Consejo Nacional de Ciencia y Tecnología (CONACyT) for supporting his graduate studies. A.A.V., R.M.V., and A.V. thank DGAPA-UNAM for continued financial support to carry out research project under Grant No. IN116520. M.T. Vázquez and O. Jiménez provided the information requested. A. López and A. Pompa provided technical support and maintenance of the computing unit at IIM-UNAM. Simulations were partially carried out in the Computing Center of DGTIC-UNAM.
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Financial support was recieved from DGAPA-UNAM under Grant No. IN116520.
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AAV, AV and RMV conceived this research and designed it with the participation of IR and DHR IR did all the simulations. All authors discussed and analyzed the results. AAV wrote the first draft and the other authors enriched the manuscript.
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Rodríguez, I., Valladares, R.M., Valladares, A. et al. Superconductivity Versus Magnetism in the Amorphous Palladium “Ides”: Pd1−c(H/D/T)c. J Low Temp Phys 209, 232–243 (2022). https://doi.org/10.1007/s10909-022-02807-8
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DOI: https://doi.org/10.1007/s10909-022-02807-8