Entangled spin clusters: some special features
| dc.creator | Tribedi, Amit | |
| dc.creator | Bose, Indrani | |
| dc.date | 2006-06-12 | |
| dc.date.accessioned | 2026-07-07T07:19:02Z | |
| dc.date.available | 2026-07-07T07:19:02Z | |
| dc.description | In this paper, we study three specific aspects of entanglement in small spin clusters. We first study the effect of inhomogeneous exchange coupling strength on the entanglement properties of the S=1/2 antiferromagnetic linear chain tetramer compound NaCuAsO_{4}. The entanglement gap temperature, T_{E}, is found to have a non-monotonic dependence on the value of $α$, the exchange coupling inhomogeneity parameter. We next determine the variation of T_{E} as a function of S for a spin dimer, a trimer and a tetrahedron. The temperature T_{E} is found to increase as a function of S, but the scaled entanglement gap temperature t_{E} goes to zero as S becomes large. Lastly, we study a spin-1 dimer compound to illustrate the quantum complementarity relation. We show that in the experimentally realizable parameter region, magnetization and entanglement plateaus appear simultaneously at low temperatures as a function of the magnetic field. Also, the sharp increase in one quantity as a function of the magnetic field is accompanied by a sharp decrease in the other so that the quantum complementarity relation is not violated. | |
| dc.description | 17 pages, 6 figures. Accepted in Phys. Rev. A | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0606095 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0606095 | |
| dc.identifier | Phys. Rev. A 74, 012314 (2006) | |
| dc.identifier | doi:10.1103/PhysRevA.74.012314 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/114515 | |
| dc.subject | Quantum Physics | |
| dc.subject | Other Condensed Matter | |
| dc.title | Entangled spin clusters: some special features | |
| dc.type | text |