Frustrated Spin-Peierls Chains

Details Frustrated Spin-Peierls Chains Frustrated Spin-Peierls Chains

1995-07-12

arxiv.org/abs/cond-mat/9507041v1

Physics

Condensed Matter

14 pages, 7 figures included in the compressed uuencoded file. To be published in Phys. Rev. B (Sept. 1995)

Scientific paper

10.1103/PhysRevB.52.6723

We study the phase diagram, ground state properties, and excitation gaps of a frustrated spin-Peierls chain, i.e. a spin-Peierls chain with both nearest neighbor exchange $J_1$ and next nearest neighbor exchange $J_2$. The phase diagram is calculated using a bosonization Renormalization-Group (RG) method. We propose a (bosonic) bond-operator mean field approximation to calculate the ground state properties and excitation gaps.

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