The spin-Peierls chain revisited
arXiv:cond-mat/0606360 · doi:10.1016/j.jmmm.2006.10.399
Abstract
We extend previous analytical studies of the ground-state phase diagram of a one-dimensional Heisenberg spin chain coupled to optical phonons, which for increasing spin-lattice coupling undergoes a quantum phase transition from a gap-less to a gaped phase with finite lattice dimerisation. We check the analytical results against established four-block and new two-block density matrix renormalisation group (DMRG) calculations. Different finite-size scaling behaviour of the spin excitation gaps is found in the adiabatic and anti-adiabatic regimes.
2 pages, 1 figure, submitted to ICM 2006
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Cited by in corpus (4)
- Thermal and quantum lattice fluctuations in Peierls chains
- Quantum Phase Transition in Antiferromagnetic Heisenberg Chains Coupled to Phonons
- Tuning magnetic interactions with nonequilibrium optical phonon populations: a theoretical study
- Comparison of computer-algebra strong-coupling perturbation theory and dynamical mean-field theory for the Mott-Hubbard insulator in high dimensions