2 papers
cond-mat2000
Spin-Peierls instability in the spin-1/2 transverse XX chain with Dzyaloshinskii-Moriya interaction
O. Derzhko, J. Richter, O. Zaburannyi
We calculate exactly the density of magnon states of the regularly alternating spin-1/2 XX chain with Dzyaloshinskii-Moriya interaction. The obtained results permit us to examine t…
cond-mat1999
Spin-1/2 periodic nonuniform XX chains and the spin-Peierls instability
O. Derzhko, J. Richter, O. Zaburannyi
Using continued fractions we obtained the exact result for the density of magnon states of the regularly alternating spin-1/2 XX chain with Dzyaloshinskii-Moriya interaction. We ex…