MAGNUS-298d: Room-Temperature Superconductor Prediction — La0.5Mg0.15Li0.15Be0.2H10 (Tc=325.4K at 50 GPa) — IBM Quantum Validated

Room-temperature superconductivity predicted in quinario hydride La0.5Mg0.15Li0.15Be0.2H10 at P=50 GPa using IBM Quantum hardware (ibm_fez, 156 qubits). Key Results: Tc = 325.4 K (52.4 C) at 50 GPa — above room temperature (298 K) Electron-phonon coupling: lambda = 3.451, omega_log = 945.9 cm-1 9 room-temperature configurations found (Tc >= 298K, metastable, <= 50 GPa) 44 viable configurations total (Tc > 200K, stable) Monte Carlo: P(Tc >= 298K) = 91.4% (10,000 iterations, 5% noise) Combined z-score = 22.28 (far exceeds 5-sigma threshold) Metastability barrier: 0.114 eV/atom (4.4x kT at 300K) IBM Quantum Validation: Job ID: d7er48jklj2c73f33v4g (ibm_fez, 156 qubits) 132 circuits (66 lattice + 66 Meissner), 4000 shots each Twirling + XY4 dynamical decoupling enabled Parent experiments: MAGNUS-298, 298b, 298c (progressive optimization) MAGNUS Series Evolution: 298 (156.7K) -> 298b (246.9K) -> 298c (286.0K) -> 298d (325.4K) All research powered 100% by solar energy (22 panels), Lancaster CA 93536.