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arXiv · 1706.06350

Dimer-Monomer Ground State for Extended Spin-1/2 Diamond Chain

Ken'ichi Takano
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Abstract

We present a condition in which the dimer-monomer state is exactly the ground state of an extended diamond chain with spin magnitude 1/2. The Hamiltonian of the extended diamond chain includes next-nearest-neighbor exchange interactions and distortions, where the spin magnitude of the spin pair on a singlet dimer is not generally conserved. The method of deriving the condition is based on representing the Hamiltonian in a complete square form. The dimer-monomer ground state is found even if the Hamiltonian has no space-reflection symmetries.

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Ken'ichi Takano. 2017-06-20. Dimer-Monomer Ground State for Extended Spin-1/2 Diamond Chain. https://doi.org/10.7566/jpsj.86.093705

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