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arXiv 0907.4415cond-mat.mtrl-scicond-mat.str-el
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氧化铜的短程磁有序和温度相关性质

Short-range magnetic order and temperature-dependent properties of cupric oxide

X. Rocquefelte, M. -H. Whangbo, A. Villesuzanne, S. Jobic, F. Tran, K. Schwarz, P. Blaha

摘要:

采用混合密度泛函理论计算了CuO的光学和磁性随温度的变化关系。我们的工作表明,CuO中的自旋交换相互作用既不是完全一维的,也不是完全三维的。CuO的光学带隙和63Cu核四极共振频率的大的温度依赖性源于自旋有序和电子结构之间的强耦合以及短程有序随温度的逐渐出现的综合效应。

英文摘要:

The temperature dependence of the optical and magnetic properties of CuO were examined by means of hybrid density functional theory calculations. Our work shows that the spin exchange interactions in CuO are neither fully one-dimensional nor fully three-dimensional. The large temperature dependence of the optical band gap and the 63Cu nuclear quadrupole resonance frequency of CuO originate from the combined effect of a strong coupling between the spin order and the electronic structure and the progressive appearance of short-range order with temperature.

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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