Theoretical Discovery of Angular Momentum Reversal in Magnetic Vortical Matter
2025-07-03
Press Release
A collaborative research group, including Kazuya Mameda (Visiting Scientist, iTHEMS) has theoretically discovered that in quantum systems where strong magnetic fields and rotation coexist, the polarization of angular momentum becomes dominated by orbital angular momentum—originating from the particles’ orbital motion—rather than spin. This leads to a reversed direction of polarization compared to conventional expectations.
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Reference
- Kenji Fukushima, Koichi Hattori, Kazuya Mameda, Preponderant Orbital Polarization in Relativistic Magnetovortical Matter, Phys. Rev. Lett. 135, 011601 (2025), doi: 10.1103/PhysRevLett.135.011601