It’s normal for crystals to have changes in their size when you replace atoms.
The material they talk about here is a metal oxide, not just a metal. These are much more brittle than metals but they can still take some minor squashing or stretching (like ceramic bowls ringing). You’re correct that this takes a lot of pressure to sustain.
It’s a bit too soon to say no one has recreated it quickly, the paper was only uploaded a week ago. I’m also skeptical but we should see some responses from other physicists soon.
It’s normal for crystals to have changes in their size when you replace atoms.
The material they talk about here is a metal oxide, not just a metal. These are much more brittle than metals but they can still take some minor squashing or stretching (like ceramic bowls ringing). You’re correct that this takes a lot of pressure to sustain.
It’s a bit too soon to say no one has recreated it quickly, the paper was only uploaded a week ago. I’m also skeptical but we should see some responses from other physicists soon.