Applied electric field instead of pressure in H-based superconductors

Naoum Karchev ()
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Naoum Karchev: University of Sofia

The European Physical Journal B: Condensed Matter and Complex Systems, 2022, vol. 95, issue 3, 1-4

Abstract: Abstract In our desire to give a new suggestion for H-based superconductors experiments we present a theoretical framework for understanding the impact of an applied electric field on pressured hydride superconductors. We study a material at pressure p, when it possesses insulator-superconductor transition, at the respective superconducting critical temperature $$T_{cr}$$ T cr . The theory shows the applied electric field penetrates the material and forces the Cooper pairs to Bose condensate. If one applies an electric field and then increases the temperature, the theory predicts novel critical temperature $$T^{el}_{cr}$$ T cr el higher than $$T_{cr}$$ T cr . Therefore, the system has a higher superconducting critical temperature if we apply an electric field instead of increasing the pressure. The result shows that in the case of carbonaceous sulfur hydride at 234Gpa and near but below critical temperature $$T_c=283K$$ T c = 283 K , applying a sufficiently strong electric field, we can bring the superconducting critical temperature close to 300 K. Graphic abstract

Date: 2022
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DOI: 10.1140/epjb/s10051-022-00311-2

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