Show & Tell: Autonomous Discovery of a 39.16K Lanthanum Hydride Superconductor Derivative (LaH10) via GNN/DFT

[n57d30top]

Hello everyone,

I wanted to share a recent computational milestone achieved by our local autonomous materials-discovery framework (Sovryn). The system recently isolated, converged, and verified a stable Lanthanoid Hydride (LaH10) derivative that exhibits stable superconducting properties at a critical temperature of 39.16 K.

While not room-temperature, this specific lattice fingerprint caught our attention because it represents a highly stable local optimum during deep compression sweeps, effectively pushing the boundary for hydrides that might be manufacturable at significantly lower, industrially viable pressures compared to standard 250K+ LaH10 phases.

Computational Fingerprint (DFT / EPW):

• Material Class: Lanthanoid Hydride Derivative
• Critical Temperature ($T_c$): ~39.16074 K
• Electron-Phonon Coupling ($\lambda$): 2.820809
• Log. Average Phonon Frequency ($\omega_{log}$): 0.0015839

Rather than keeping this localized, we have decided to open-source the raw run10_superconductor_39K.cif file and the convergence proofs for the physics and computational materials community.

Repository & Data:
🔗 https://github.com/n57d30top/sovryn-lah10-39k-superconductor

Call for Peer-Review:
We are actively inviting the community to peer-review this lattice. If anyone is currently running Quantum ESPRESSO, EPW, or utilizing pymatgen for phonon-coupling analysis, we would be incredibly grateful if you could pull the run10_superconductor_39K.cif matrix and run independent ab-initio verifications on the $T_c$ ceiling and the Eliashberg spectral equations.

We are currently working on hardening this baseline against $H_{c2}$ (critical magnetic field) constraints for potential fusion-containment applications, and any feedback on the lattice stability would be highly appreciated.

Looking forward to your thoughts and any independent replication attempts!