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science4h ago
Common rust's rare magnetism could power ultra-fast quantum devices
- Latest finding: hematite shows altermagnetism, a new magnetic form, with clear magnon splitting observed in spin waves.
- ORNL used inelastic neutron scattering at the SNS to probe hematite's magnetic dynamics at the atomic level.
- The team combined experiments with modeling using ORNL’s Sunny software to study quantum magnetism.
- Hematite’s abundance and stability make it suitable for room-temperature spintronics without heavy cooling.
- Researchers say charge-free spin currents could reduce energy loss and heat in devices.
- The study confirms altermagnetism in hematite, suggesting a new platform for high-speed quantum electronics.
- Findings, published in Physical Review Letters, open paths to future spintronic materials.
- Future work will explore how spin-wave gaps influence heat transport in hematite.
- Researchers used Spallation Neutron Source facilities to perform the key measurements.
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