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arXiv 1706.03351cond-mat.stat-mech
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含时磁场驱动下三角晶格的动态有序-无序转变

Dynamically order-disorder transition in triangular lattice driven by a time dependent magnetic field

Erol Vatansever

摘要:

我们阐明了方波磁场作用下三角晶格系统的动态相变特征和有限尺寸标度分析。研究发现,当外场的半周期值达到临界值时,系统呈现出动态有序相和无序相之间的动态相变,临界值的位置由Binder累积量估计。此外,在动态相变点,有限尺寸标度的Monte Carlo结果的动态序参量和磁化率给出的临界指数$β/ν=0.143\pm0.004$和$γ/ν=1.766\pm0.036$,分别。临界指数的计算结果表明,目前的磁系统与二维平衡态伊辛模型属于同一普适类。

英文摘要:

We have elucidated the dynamic phase transition features and finite-size scaling analysis of the triangular lattice system under the presence of a square-wave magnetic field. It has been found that as the value of half-period of the external field reaches its critical value, whose location is estimated by means of Binder cumulant, the system presents a dynamic phase transition between dynamically ordered and disordered phases. Moreover, at the dynamic phase transition point, finite-size scaling of the Monte Carlo results for the dynamic order parameter and susceptibility give the critical exponents $β/ν=0.143\pm0.004$ and $γ/ν=1.766\pm0.036$, respectively. The obtained critical exponents show that present magnetic system belongs to same universality class with the two-dimensional equilibrium Ising model.

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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