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Problem revision

Which $\mathrm{La_3Ni_2O_7}$ polymorph carries bulk superconductivity under pressure?

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Record hash
b3a2b4f7e2cc646c0fa3d74d645e3e321a0a0842e50635e3da3e2c2840f55d81
Content hash
957e8670fe358cc0e82d1742b69260e9a75f4209505e5812d4b8e559015e317a
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
1,109
Checkpoint
Size 2,123, logged in Rekor and mirrored
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:18:00Z (the Bitcoin date is the one that counts)