89 citations · 171 across the 6 of their papers we have counts for
6 papers
Antiferromagnetism in doped anisotropic two-dimensional spin-Peierls systems
A. Dobry, P. Hansen, J. Riera +2
We study the formation of antiferromagnetic correlations induced by impurity doping in anisotropic two-dimensional spin-Peierls systems. Using a mean-field approximation to deal wi…
Interaction between impurities and solitons in quasi one-dimensional spin-Peierls systems
D. Augier, P. Hansen, D. Poilblanc +2
The role of the spin-phonon coupling in spin-Peierls chains doped with spin-0 or spin-1 impurities is investigated by various numerical methods such as exact diagonalization, quant…
Study of impurities in spin-Peierls systems including lattice relaxation
P. Hansen, D. Augier, J. Riera +1
The effects of magnetic and non-magnetic impurities in spin-Peierls systems are investigated allowing for lattice relaxation and quantum fluctuations. We show that, in isolated cha…
Study of spin-Peierls transition in alpha'--NaV2O5 by infrared reflectivity
D. Smirnov, P. Millet, J. Leotin +4
Polarized infrared reflectivity measurements have been performed on single crystals of the spin-Peierls compound alpha'-NaV2O5 in the temperature range 20-300 K. Pronounced spectra…
Effect of Spin-1 Impurities in Dimerized Heisenberg Chains
P. M. Hansen, J. A. Riera, A. Delia +1
The effects of spin-1 impurities introduced in dimerized antiferromagnetic spin chains are studied using Lanczos diagonalization and quantum Monte Carlo simulations. Firstly, the m…
Enhancement of Antiferromagnetic Correlations Induced by Nonmagnetic Impurities: Origin and Predictions for NMR Experiments
Markus Laukamp, George Balster Martins, Claudio J. Gazza +5
Spin models that have been proposed to describe dimerized chains, ladders, two dimensional antiferromagnets, and other compounds are here studied when some spins are replaced by sp…