Access the full text.
Sign up today, get DeepDyve free for 14 days.
Loading next page...
/lp/american-physical-society-aps/quasiparticle-properties-of-quantum-hall-ferromagnets-AVkvvCgJbi
References
References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.
- Publisher
- American Physical Society (APS)
- Copyright
- Copyright © 2000 The American Physical Society
- ISSN
- 1095-3795
- DOI
- 10.1103/PhysRevB.62.2640
- Publisher site
- See Article on Publisher Site
Abstract
We report on a study of the temperature and Zeeman-coupling-strength dependence of the one-particle Green’s function of a two-dimensional (2D) electron gas at a Landau-level filling factor ν = 1 , where the ground state is a strong ferromagnet. Our work places emphasis on the role played by the itinerancy of the electrons which carry the spin magnetization, and on analogies between this system and conventional itinerant electron ferromagnets. We go beyond self-consistent-field theory by evaluating the one-particle Green’s function using a self-energy, which accounts for quasiparticle spin-wave interactions. Our calculations predict a sharp peak at a large bias voltage in the 2D-2D tunneling current, with an integrated strength that increases approximately linearly with temperature. We compare calculated properties with experiment, where available, and with predictions based on numerical exact diagonalization and other theoretical approaches.
Journal
Physical Review B – American Physical Society (APS)
Published: Jul 15, 2000