44 citations · 150 across the 6 of their papers we have counts for
8 papers
Pressure dependence and non-universal effects of microscopic couplings on the spin-Peierls transition in CuGeO_3
R. Raupach, A. Klümper, F. Schönfeld
The theory by Cross and Fisher (CF) is by now commonly accepted for the description of the spin-Peierls transition within an adiabatic approach. The dimerization susceptibility as…
Soliton Lattices in the Incommensurate Spin-Peierls Phase: Local Distortions and Magnetizations
Goetz S. Uhrig, Friedhelm Schoenfeld, Jean-Paul Boucher +1
It is shown that nonadiabatic fluctuations of the soliton lattice in the spin-Peierls system CuGeO_3 lead to an important reduction of the NMR line widths. These fluctuations are t…
Finite Temperature DMRG Investigation of the Spin-Peierls Transition in CuGeO
A. Klümper, R. Raupach, F. Schönfeld
We present a numerical study of thermodynamical properties of dimerized frustrated Heisenberg chains down to extremely low temperatures with applications to CuGeO. A variant of…
Unified Quantum Mechanical Picture for Confined Spinons in Dimerized and Frustrated Spin S=1/2 Chains
Goetz S. Uhrig, Friedhelm Schoenfeld, Markus Laukamp +1
A quantum mechanical picture is presented to describe the behavior of confined spinons in a variety of S=1/2 chains. The confinement is due to dimerization and frustration and it m…
A magnetic model for the incommensurate I phase of spin-Peierls systems
G. S. Uhrig, F. Schoenfeld, J. P. Boucher
A magnetic model is proposed for describing the incommensurate I phase of spin-Peierls systems. Based on the harmonicity of the lattice distortion, its main ingredient is that the…
On the Incommensurate Phase in Modulated Heisenberg Chains
F. Schönfeld, G. Bouzerar, G. S. Uhrig +1
Using the density matrix renormalization group method (DMRG) we calculate the magnetization of frustrated S=1/2 Heisenberg chains for various modulation patterns of the nearest nei…