| Issue |
Europhys. Lett.
Volume 47, Number 3, August I 1999
|
|
|---|---|---|
| Page(s) | 364 - 370 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1999-00397-8 | |
| Published online | 01 September 2002 | |
An exactly solvable model of generalized spin ladder
1
Institut für Angewandte Mathematik, Universität Bonn - D-53115 Bonn, Germany Fakultät für Mathematik, Ruhr-Universität Bochum - D-4478 Bochum, Germany
2
Institut für Physik, Universität Augsburg - 86135 Augsburg, Germany Laboratory of Ultra-Low Temperature Physics, Chinese Academy of Science Beijing 100080, PRC
Received:
11
February
1999
Accepted:
1
June
1999
A detailed study of an 
spin ladder model is given.
The ladder consists of plaquettes formed by
nearest-neighbor rungs with all possible 
-invariant interactions.
For properly chosen coupling constants, the model is shown to be
integrable in the sense that the quantum Yang-Baxter
equation holds and one has an infinite number of conserved quantities.
The R-matrix and L-operator associated with the
model Hamiltonian are given in a limiting case. It is shown that after
a simple transformation, the model can be solved via a Bethe ansatz.
The phase diagram of the ground state is exactly derived using the Bethe
ansatz equation.
PACS: 75.10.Jm – Quantized spin models
© EDP Sciences, 1999
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.