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Two-Dimensional Quantum Ferromagnets | | Carsten Timm
; Patrik Henelius
; Anders W. Sandvik
; S.M. Girvin
; | | Date: |
21 Oct 1997 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | | Abstract: | We present 1/N Schwinger boson and quantum Monte Carlo calculations of the magnetization and NMR relaxation rate for the two-dimensional ferromagnetic Heisenberg model representing a quantum Hall system at filling factor nu=1. Comparing the analytic and numerical calculations, we find that the SU(N) version of Schwinger boson theory gives accurate results for the magnetization at low temperatures, whereas the O(N) model works well at higher temperatures. | | Source: | arXiv, cond-mat/9710220 | | Services: | Forum | Review | PDF | Favorites | |
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