Inhaltszusammenfassung

We present a Hartree-Fock study of the competition between disorder and interactions in quantum hall ferromagnets near v = 1. we find that the ground state at v = 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 v = 1, the ground state evolves from a conventional anderson insulator. to a conventional quasiparticle glass, and fin...We present a Hartree-Fock study of the competition between disorder and interactions in quantum hall ferromagnets near v = 1. we find that the ground state at v = 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 v = 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.» weiterlesen» einklappen

Autoren

Klassifikation

DFG Fachgebiet:
3.17 - Theoretische Chemie

DDC Sachgruppe:
Physik