Impurity induced spin texture in quantum critical 2D antiferromagnets
| dc.creator | Hoglund, Kaj H. | |
| dc.creator | Sandvik, Anders W. | |
| dc.creator | Sachdev, Subir | |
| dc.date | 2006-11-15 | |
| dc.date | 2007-02-24 | |
| dc.date.accessioned | 2026-07-07T08:20:33Z | |
| dc.date.available | 2026-07-07T08:20:33Z | |
| dc.description | We describe the uniform and staggered magnetization distributions around a vacancy in a quantum critical two-dimensional S=1/2 antiferromagnet. The distributions are delocalized across the entire sample with a universal functional form arising from an uncompensated Berry phase. The numerical results, obtained using quantum Monte Carlo simulations of the Heisenberg model on bilayer lattices with up to approximately 10^5 spins, are in good agreement with the proposed scaling structure. We determine the exponent eta'=0.40 +/- 0.02, which governs both the staggered and uniform magnetic structure away from the impurity and also controls the impurity spin dynamics. | |
| dc.description | 4 pages, 3 figures. Published version | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0611418 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0611418 | |
| dc.identifier | Phys. Rev. Lett. 98, 087203 (2007) | |
| dc.identifier | doi:10.1103/PhysRevLett.98.087203 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/135103 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Impurity induced spin texture in quantum critical 2D antiferromagnets | |
| dc.type | text |