2002/01/01 by Jairo Sinova, Allan H. MacDonald, A. H. MacDonald +2
Chemistry · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Quantum and electron transport phenomena #Topological Materials and Phenomena #cond-mat.mes-hall
paper · pdf · doi:10.1016/s1386-9477(01)00263-6
published as Physica E 12, 16 (2002) · 3 pages, 3 figures, proceedings for EP2DS-14, Prague 2001
openalex publication_date 2002/01/01 · arxiv created 2002/04/12 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present a Hartree-Fock study of the competition between disorder and interactions in quantum Hall ferromagnets near ν=1. We find that the ground state at ν=1 evolves with increasing interaction strength from a quasi-metallic paramagnet, to a partially spin-polarized ferromagnetic Anderson insulator, and to a fully spin-polarized ferromagnet with a charge gap. Away from ν=1, the ground state evolves from a conventional Anderson insulator, to a conventional quasiparticle glass, and finally to a ferromagnetic Skyrmion quasiparticle glass. These different regimes can be measured in low-temperature transport and NMR experiments. We present calculations for the NMR spectra in different disorder regimes.