Phase Diagram of the Spin-1/2 Heisenberg Alternating Chain in a Magnetic Field *
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Phase Diagram of the Spin-1/2 Heisenberg Alternating Chain in a Magnetic Field * |
| Wei-Xia Chen,Jie Ren,Wen-Long You,Xiang Hao,Yin-Zhong Wu |
| Fig. 4 (Color online) The string order parameter $O^{\rm even}_x$ ($r$) is plotted as a function of the magnetic field $B$ and site distance $r$ for with $\lambda=-1$. |
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