Phase diagram of a frustrated spin-$\frac{1}{2}$ $J_{1}$--$J_{2}$ $XXZ$ model on the honeycomb lattice

C. E. Campbell; P. H. Y. Li; R. F. Bishop

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Phase diagram of a frustrated spin-frac{1}{2} J₁--J₂ XXZ model on the honeycomb lattice

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arxiv 1404.0194 v2 pith:QE3VCQTL submitted 2014-04-01 cond-mat.str-el

Phase diagram of a frustrated spin-frac{1}{2} J₁--J₂ XXZ model on the honeycomb lattice

P. H. Y. Li , R. F. Bishop , C. E. Campbell This is my paper

classification cond-mat.str-el

keywords modeldiagramfrustratedhoneycombinteractionskappalatticeparameter

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We study the zero-temperature ($T=0$) ground-state (GS) properties of a frustrated spin-half $J^{XXZ}_{1}$--$J^{XXZ}_{2}$ model on the honeycomb lattice with nearest-neighbor and next-nearest-neighbor interactions with exchange couplings $J_{1}>0$ and $J_{2} \equiv \kappa J_{1}>0$, respectively, using the coupled cluster method. Both interactions are of the anisotropic $XXZ$ type. We present the $T=0$ GS phase diagram of the model in the ranges $0 \leq \Delta \leq 1$ of the spin-space anisotropy parameter and $0 \leq \kappa \leq 1$ of the frustration parameter. A possible quantum spin-liquid region is identified.

Phase diagram of a frustrated spin-frac{1}{2} J₁--J₂ XXZ model on the honeycomb lattice

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