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This research explores the superconducting properties of Nb3Al under varying hydrostatic pressure to understand how Nb–Nb vibrations affect stability.

May 1, 2026Journal of Applied Physics

Pressure stability of superconductivity in Nb3Al: Role of low-frequency Nb–Nb chain vibrations and electron–phonon interplay

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LWLi-Na WuXi'an Technological University JSJin-Ke ShenXi'an Technological University YGYi-Jia GeXi'an Technological University

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Randomized trial investigates superconducting properties under pressure in Nb3Al, suggesting strong performance for magnets.

Key Points

This research explores the superconducting properties of Nb3Al under varying hydrostatic pressure to understand how Nb–Nb vibrations affect stability.
Conducted first-principles calculations on Nb3Al's structural and superconducting properties under hydrostatic pressure (0–15 GPa).
Analyzed electron–phonon coupling strength and phonon spectral characteristics.
Measured critical transition temperature (TC) and its variation with pressure.
At ambient pressure, electron–phonon coupling strength λ was calculated at ≃1.71 with TC ≃19.1 K.
Under pressure, λ decreased while the characteristic phonon energy ωlog increased, affecting TC non-monotonically.
Total suppression of TC remained under 3% across the studied pressure range, indicating exceptional stability.

Cite This Study

Wu et al. (2026) studied this question.

synapsesocial.com/papers/69f442fc967e944ac55665b8 https://doi.org/10.1063/5.0325182

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Pressure stability of superconductivity in Nb3Al: Role of low-frequency Nb–Nb chain vibrations and electron–phonon interplay

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Cite This Study

Pressure stability of superconductivity in Nb3Al: Role of low-frequency Nb–Nb chain vibrations and electron–phonon interplay

Discussion

Member takes

Implication

Key Points

Cite This Study

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