DMRG Numerical Study of the Kagomé Antiferromagnet
| dc.creator | Jiang, H. C. | |
| dc.creator | Weng, Z. Y. | |
| dc.creator | Sheng, D. N. | |
| dc.date | 2008-04-10 | |
| dc.date.accessioned | 2026-07-07T10:01:52Z | |
| dc.date.available | 2026-07-07T10:01:52Z | |
| dc.description | We numerically study the spin-1/2 antiferromagnetic Heisenberg model on the kagomé lattice using the density-matrix renormalization group (DMRG) method. We find that the ground state is a magnetically disordered spin liquid, characterized by an exponential decay of spin-spin correlation function in real space and a magnetic structure factor showing system-size independent peaks at commersurate antiferromangetic wavevectors. We obtain a spin triplet excitation gap $ΔE(S=1)=0.055\pm 0.005$ by extrapolation based on the large size results, and confirm the presence of gapless singlet excitations. The physical nature of such an exotic spin liquid is also discussed. | |
| dc.description | 5 pages, 5 figures and 1 table | |
| dc.identifier | https://arxiv.org/abs/0804.1616 | |
| dc.identifier | http://arxiv.org/abs/0804.1616 | |
| dc.identifier | Phys. Rev. Lett. 101, 117203 (2008) | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/168774 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | DMRG Numerical Study of the Kagomé Antiferromagnet | |
| dc.type | text |