arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1802.06324cond-mat.mes-hall
收藏

人工蜂窝晶格自旋固相的分数电维数

Fractional electrical dimensionality in the spin solid phase of artificial honeycomb lattice

A. Dahal, B. Summers, D. K. Singh

摘要:

二维人工磁性蜂窝晶格是非常规磁性材料研究的前沿。在许多新兴的磁相,预测出现作为温度的函数,具有零磁化和熵的低温自旋固相是特别重要的。在这里,我们报告了一个有趣的观点,自旋固体秩序的后果,在一个人工蜂窝晶格的超小连接元素使用电维数分析。在低温($T \leq$ 30 K)下,该体系表现出很强的绝缘特性.对实验数据的电维数分析表明,低温下蜂窝晶格自旋固相的分数维为$d$ = 0.6(0.04)。自旋固相中的电尺寸要小得多,这也许强调了该系统中的强绝缘行为。此外,分数维在其他二维系统中表明在低温下在人造蜂窝晶格中的非表面状电输运。

英文摘要:

Two-dimensional artificial magnetic honeycomb lattice is at the forefront of research on unconventional magnetic materials. Among the many emergent magnetic phases that are predicted to arise as a function of temperature, the low temperature spin solid phase with zero magnetization and entropy is of special importance. Here, we report an interesting perspective to the consequence of spin solid order in an artificial honeycomb lattice of ultra-small connected elements using electrical dimensionality analysis. At low temperature, $T \leq$ 30 K, the system exhibits a very strong insulating characteristic. The electrical dimensionality analysis of the experimental data reveals a fractional dimensionality of $d$ = 0.6(0.04) in the spin solid phase of honeycomb lattice at low temperature. The much smaller electrical dimension in the spin solid phase, perhaps, underscores the strong insulating behavior in this system. Also, the fractional dimensionality in an otherwise two-dimensional system suggests a non-surface-like electrical transport at low temperature in an artificial honeycomb lattice.

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。

↑