Social media is abuzz with chatter about the material, but some scientists are pushing back on the hype
, accompanied by a GIF of former US president Barack Obama performing a ‘mic drop’. The optimism was prompted by Griffin’s use of DFT to find that LK-99 has ‘flat bands’, indicating that electrons in the material are strongly correlated with each other. “Flat-band systems tend to show interesting physics,” Vishik says. “So when a material is predicted to have a flat band, people get kind of excited.”“My paper did *not* prove nor give evidence of superconductivity”.
Griffin agrees that knowing the structure is essential. But she says that the structure found by the Korean team is similar to that of other lead phosphate minerals. “So it’s not too bizarre to think it possible.” . But this does not provide evidence for superconductivity at the researchers’ claimed temperatures in the lead-based LK-99, Schoop says.The limited success of the replication attempts has not quelled speculation online. Unverified videos of samples, supposedly levitating because of superconductivity, have circulated as viral evidence, despite the fact that many materials and objects — such as graphite, frogs and pliers — can exhibit similar magnetic behaviour.
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