Fractional S^z excitation and its bound state around the 1/3 plateau of the S=1/2 Ising-like zigzag XXZ chain
| dc.creator | Okunishi, Kouichi | |
| dc.creator | Tonegawa, Takashi | |
| dc.date | 2003-07-05 | |
| dc.date.accessioned | 2026-07-07T06:33:37Z | |
| dc.date.available | 2026-07-07T06:33:37Z | |
| dc.description | We present the microscopic view for the excitations around the 1/3 plateau state of the Ising-like zigzag XXZ chain. We analyze the low-energy excitations around the plateau with the degenerating perturbation theory from the Ising limit, combined with the Bethe-form wave function. We then find that the domain-wall particles carrying $S^z=\pm 1/3$ and its bound state of $S^z=\pm 2/3$ describe well the low-energy excitations around the 1/3 plateau state. The formation of the bound state of the domain-walls clearly provides the microscopic mechanism of the cusp singularities and the even-odd behavior in the magnetization curve. | |
| dc.description | 13 pages, 15 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0307121 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0307121 | |
| dc.identifier | Phys. Rev. B 68, 224422 (2003) | |
| dc.identifier | doi:10.1103/PhysRevB.68.224422 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/99255 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Statistical Mechanics | |
| dc.title | Fractional S^z excitation and its bound state around the 1/3 plateau of the S=1/2 Ising-like zigzag XXZ chain | |
| dc.type | text |