Abstract
The effect of the anisotropy of the interaction of a spin chain in the XXZ Heisenberg model on the concurrence of the states of neighboring sites is studied. When anisotropy increases, the maximum concurrence in a magnetic field increases above the value reached in the absence of the field. The maximum magnetic field allowing entanglement is linearly related to the anisotropy parameter. (C) 2004 MAIK "Nauka/Interperiodica".
| Original language | English |
|---|---|
| Pages (from-to) | 441-444 |
| Number of pages | 4 |
| Journal | Jetp Letters |
| Volume | 80 |
| Issue number | 6 |
| Publication status | Published - 2004 |