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arXiv 0812.1862cond-mat.str-el
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具有Dzyaloshinskiii-Moriya相互作用的自旋1/2 XXZ模型的Phase Diagram

Phase Diagram of spin 1/2 XXZ Model With Dzyaloshinskii-Moriya Interaction

R. Jafari, A. Langari

摘要:

研究了具有Dzyaloshinskiii-Moriya(DM)相互作用的一维XXZ模型的相图。我们利用量子重整化群方法得到了稳定的不动点、临界点和耦合常数的标度。该模型有三个相,铁磁,自旋流体和Néel相,它们由取决于DM耦合常数的临界线分开。我们证明了交错磁化强度是系统的序参量,并研究了DM相互作用对螺旋磁序手征序的影响。

英文摘要:

We have studied the phase diagram of the one dimensional XXZ model with Dzyaloshinskii-Moriya (DM) interaction. We have applied the quantum renormalization group (QRG) approach to get the stable fixed points, critical point and the scaling of coupling constants. This model has three phases, ferromagnetic, spin-fluid and Néel phases which are separated by a critical line which depends on the DM coupling constant. We have shown that the staggered magnetization is the order parameter of the system and investigated the influence of DM interaction on the chiral ordering as a helical magnetic order.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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