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Thermodynamics of multiferroic spin chains
J. Sirker
The minimal model to describe many spin chain materials with ferroelectric properties is the Heisenberg model with ferromagnetic nearest neighbor coupling J1 and antiferromagnetic…
Spin-wave theory for dimerized ferromagnetic chains
Alexander Herzog, Peter Horsch, Andrzej M. Oles +1
We describe a Peierls dimerization which occurs in ferromagnetic spin chains at finite temperature, within the modified spin-wave theory. Usual spin-wave theory is modified by intr…
Diffusion and ballistic transport in one-dimensional quantum systems
J. Sirker, R. G. Pereira, I. Affleck
It has been conjectured that transport in integrable one-dimensional (1D) systems is necessarily ballistic. The large diffusive response seen experimentally in nearly ideal realiza…
Consequences of lattice imperfections and interchain couplings for the critical properties of spin-1/2 chain compounds
J. Sirker
To allow for a comparison of theoretical predictions for spin chains with experimental data, it is often important to take impurity effects as well as interchain couplings into acc…