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Phys. Rev. B 74, 014428 (2006) [7 pages]Influence of lattice distortions in classical spin systems
Received 20 March 2006; revised 22 June 2006; published 25 July 2006
We investigate a simple model of a frustrated classical spin chain coupled to adiabatic phonons under an external magnetic field. A thorough study of the magnetization properties is carried out both numerically and analytically. We show that already a moderate coupling with the lattice can stabilize a plateau at 1/3 of the saturation and discuss the deformation of the underlying lattice in this phase. We also study the transition to saturation where either a first- or second-order transition can occur, depending on the coupling's strength. ©2006 The American Physical Society
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