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arXiv 1306.3399cond-mat.str-el
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Kagome冰中自旋-声子诱导的磁序

Spin-phonon induced magnetic order in Kagome ice

F. A. Gómez Albarracín, D. C. Cabra, H. D. Rosales, G. L. Rossini

摘要:

研究了在面内磁场作用下,晶格形变对Kagome自旋冰的影响。我们描述的晶格能根据爱因斯坦模型,其中每个网站的失真是独立的。在晶格自由度的积分,有效的二次自旋相互作用出现。经典的蒙特卡罗模拟所得到的模型,保留了第三邻居的相互作用,在不同方向的磁场。我们发现,随着形变影响的增加,磁化曲线上出现了丰富的平台结构。

英文摘要:

We study the effects of lattice deformations on the Kagome spin ice, with Ising spins coupled by nearest neighbor exchange and long range dipolar interactions, in the presence of in-plane magnetic fields. We describe the lattice energy according to the Einstein model, where each site distortion is treated independently. Upon integration of lattice degrees of freedom, effective quadratic spin interactions arise. Classical MonteCarlo simulations are performed on the resulting model, retaining up to third neighbor interactions, under different directions of the magnetic field. We find that, as the effect of the deformation is increased, a rich plateau structure appears in the magnetization curves.

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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