INVESTIGADORES
ROSALES Hector Diego
artículos
Título:
Spin-Peierls-like phases in magnetoelastic J1−J2 antiferromagnetic chains at 1∕3 magnetization
Autor/es:
H. D. ROSALES AND G. L. ROSSINI
Revista:
PHYSICAL REVIEW B
Editorial:
AMER PHYSICAL SOC
Referencias:
Año: 2007 vol. 76 p. 224404 - 224411
ISSN:
1098-0121
Resumen:
We investigate elastic deformations of spin S = 1 / 2 antiferromagnetic J1 − J2 Heisenberg chains, at M = 1 / 3magnetization, coupled to phonons in the adiabatic approximation. Using a bosonization approach we predictthe existence of nonhomogeneous trimerized magnetoelastic phases. A rich ground state phase diagram isfound, including classical and quantum plateau states for the magnetic sector as well as inequivalent latticedeformations within each magnetic phase. The analytical results are supported by exact diagonalization ofsmall clusters.
