Scientists from South Korea discover superconductor that functions at room temperature, ambient pressure::For the first time in the world, we succeeded in synthesizing the room-temperature superconductor ($T_c \ge 400$ K, 127$^\circ$C) working at ambient pressure with a modified lead-apatite (LK-99) structure. The superconductivity of LK-99 is proved with the Critical temperature ($T_c$), Zero-resistivity, Critical current ($I_c$), Critical magnetic field ($H_c$), and the Meissner effect. The superconductivity of LK-99 originates from minute structural distortion by a slight volume shrinkage (0.48 %), not by external factors such as temperature and pressure. The shrinkage is caused by Cu$^{2+}$ substitution of Pb$^{2+}$(2) ions in the insulating network of Pb(2)-phosphate and it generates the stress. It concurrently transfers to Pb(1) of the cylindrical column resulting in distortion of the cylindrical column interface, which creates superconducting quantum wells (SQWs) in the interface. The heat capacity results indicated that the new model is suitable for explaining the superconductivity of LK-99. The unique structure of LK-99 that allows the minute distorted structure to be maintained in the interfaces is the most important factor that LK-99 maintains and exhibits superconductivity at room temperatures and ambient pressure.

  • A_A@lemmy.world
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    1 year ago

    …superconductor (Tc≥400 K, 127⁰C)…
    … not :
    superconductor ($T_c \ge 400$ K, 127$^\circ$C)
    Please correct your post.

    • astropenguin5@lemmy.world
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      1 year ago

      It’s a bot post, L4s is main content posting bot, run by L3s who I think is either a mod or the creator of the community iirc

      • A_A@lemmy.world
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        1 year ago

        Thanks @astropenguin5

        Hi @L3s
        Your bot (L4sBot) made the above post with an ugly mistake. So I made the above comment to describe that mistake. Please make the corresponding correction to your post.

        This type of mistake will likely occur often again. So please, make the bot write a notice at the top of each post, (not in the title) to advise users that we should contact you or another mod if such problems occur again.