Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1595597 | Solid State Communications | 2007 | 5 Pages |
Abstract
We investigate the spin-dependent effective electron-electron interactions in a uniform system of two-dimensional electrons to understand the spontaneous magnetization expected to occur at very low density. For this purpose, we adopt the Kukkonen-Overhauser form for the effective interactions which are built by accurately determined local-field factors describing the charge and spin fluctuations. The critical behavior of the effective interaction for parallel spin electrons allows us to quantitatively locate the transition to the ferromagnetic state at rsâ27. When the finite width effects are approximately taken into account the transition occurs at rsâ30 in agreement with recent quantum Monte Carlo calculations.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
R. Asgari, A. Esmailian, B. Tanatar,