Infinite Series of Ferrimagnetic Phases Emergent from the Gapless Spin Liquid Phase of Mixed Diamond Chains
نویسندگان
چکیده
The ground-state phases of mixed diamond chains with ($S, \tau^{(1)}, \tau^{(2)})=(1/2,1/2,1)$, where $S$ is the magnitude vertex spins, and $\tau^{(1)}$ $\tau^{(2)}$ are those apical investigated. spins connected each other by an exchange coupling $\lambda$. Other couplings set equal to unity. This model has infinite number local conservation laws. For large $\lambda$, ground state equivalent that uniform spin $1/2$ chain. Hence, a gapless liquid. $\lambda \leq 0$, Lieb-Mattis ferrimagnetic phase spontaneous magnetization $m_{\rm sp}=1$ per unit cell. intermediate we find series sp}=1/p$ $p$ takes positive integer values. $p \geq 2$ accompanied breakdown $p$-fold translational symmetry. It suggested arbitrarily $p$, namely infinitesimal magnetization, allowed as $\lambda$ approaches transition point liquid phase.
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ژورنال
عنوان ژورنال: Journal of the Physical Society of Japan
سال: 2021
ISSN: ['0031-9015', '1347-4073']
DOI: https://doi.org/10.7566/jpsj.90.054701