Speaker
Description
P-wave magnetism has recently emerged as a distinct form of magnetic order characterized by odd-parity spin splitting in momentum space, providing a new platform for spintronics. [1,2] In this talk, I will discuss microscopic mechanisms for realizing p-wave magnetism and their consequences for electronic responses.
First, I will introduce an interacting microscopic model in which a commensurate p-wave magnetic state emerges spontaneously [3]. Starting from a Hubbard model, we derive an effective spin Hamiltonian and show that the p-wave state is classically degenerate with competing noncoplanar configurations. Quantum fluctuations lift this degeneracy through an order-by-disorder mechanism and select the p-wave magnet as the ground state. The resulting electronic structure exhibits a finite current-induced spin accumulation via the Edelstein effect. I will then discuss an alternative route based on van der Waals heterostructures, where higher-order interlayer magnetic interactions stabilize an orthogonal p-wave configuration whose spin response can be controlled electrically [4]. Together, these results demonstrate complementary routes toward spontaneous and controllable p-wave magnetism and highlight its potential for spintronic applications.
[1] C. Song et al., Nature Reviews Materials 10, 473–485 (2025).
[2] X. Wang et al., Nature Reviews Physics 8, 452–467 (2026).
[3] G. Sim and S. Rachel, Phys. Rev. Lett. 137, 026503 (2026)
[4] H. Kim, C. B. Bark, S. Pak, G. Sim, and M. J. Park, Phys. Rev. B 114, 074427 (2026)
| I am the presenting author | Yes |
|---|