2007/09/30 by Suhas Gangadharaiah, Jianmin Sun, Oleg A. Starykh · 5 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Magnetic properties of thin films #Quantum and electron transport phenomena #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.100.156402
published as Phys. Rev. Lett. 100, 156402 (2008) · 4.1 pages, 1 figure; (v2) minor changes, published version
openalex publication_date 2008/04/15 · arxiv created 2008/04/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We investigate interactions between spins of strongly correlated electrons subject to the spin-orbit interaction. Our main finding is that of a novel, spin-orbit mediated anisotropic spin-spin coupling of the van der Waals type. Unlike the standard exchange, this interaction does not require the wave functions to overlap. We argue that this ferromagnetic interaction is important in the Wigner crystal state where the exchange processes are severely suppressed. We also comment on the anisotropy of the exchange between spins mediated by the spin-orbital coupling.