Frustrated spin-Peierls chains.
نویسندگان
چکیده
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 J1 and next nearest neighbor exchange J2. 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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ورودعنوان ژورنال:
- Physical review. B, Condensed matter
دوره 52 9 شماره
صفحات -
تاریخ انتشار 1995