University at Buffalo Physicists Propose Quantum Sensor for 200-Plus Altermagnet Candidates
Updated
Updated · forklog.com · Jun 1
University at Buffalo Physicists Propose Quantum Sensor for 200-Plus Altermagnet Candidates
2 articles · Updated · forklog.com · Jun 1
Summary
Physical Review Letters published a University at Buffalo team’s theoretical protocol for detecting altermagnetic order, using a diamond nitrogen-vacancy defect as a quantum sensor rather than introducing a new magnetic state.
The scheme places the NV-center near a suspected altermagnet and rotates its spin to track relaxation rates; anisotropic relaxation would signal the complex magnetic order that defines altermagnets.
The authors argue the approach could be less invasive than existing probes, which can disturb samples enough to blur intrinsic properties with measurement effects.
Interest is rising because altermagnets pair zero net magnetization with ferromagnet-like electronic behavior, a combination seen as promising for faster, more energy-efficient electronics.
Signs of altermagnetism have already appeared in several materials, and theory points to more than 200 candidate compounds, leaving experimental validation as the next hurdle.