Quantum spin pump on a finite antiferromagnetic chain through bulk states
| dc.creator | Kuo, Nan-Hong | |
| dc.creator | Sarkar, Sujit | |
| dc.creator | Hu, C. D. | |
| dc.date | 2008-09-12 | |
| dc.date | 2008-11-18 | |
| dc.date.accessioned | 2026-07-07T10:18:37Z | |
| dc.date.available | 2026-07-07T10:18:37Z | |
| dc.description | We studied the possibility of the spin pump in a S=1/2 antiferromagnetic chain. The spin chain is mapped into a fermion system and bosonization is utilized to transform the equation of motion to a sine-Gordon equation. The sine-Gordon equation on a finite chain with different boundary conditions is solved. Among numerous solutions, the static soliton is compatible with the original physical system. By varying adiabatically a angle in the phase space composed of applied electric and magnetic fields, the spin states change between the Neel state and dimer state and a quantized spin is transported by the bulk state from one end of the system to the other. | |
| dc.description | 26 pages and 12 figures | |
| dc.identifier | https://arxiv.org/abs/0809.2185 | |
| dc.identifier | http://arxiv.org/abs/0809.2185 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/174244 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Quantum spin pump on a finite antiferromagnetic chain through bulk states | |
| dc.type | text |