金属-有机量子反铁磁体中的巨大压力依赖性与维度切换

Björn Wehinger; Christoph Fiolka; Arianna Lanza; Rebecca Scatena; Mariusz Kubus; Audrey Grockowiak; William A. Coniglio; David Graf; Markos Skoulatos; Jyong-Hao Chen; Jan Gukelberger; Nicola Casati; Oksana Zaharko; Piero Macchi; Karl W. Krämer; Stan Tozer; Christopher Mudry; Bruce Normand; Christian Rüegg

doi:10.1103/PhysRevLett.121.117201

金属-有机量子反铁磁体中的巨大压力依赖性与维度切换

材料科学 2018-09-19 v2

作者: Björn Wehinger , Christoph Fiolka , Arianna Lanza , Rebecca Scatena , Mariusz Kubus , Audrey Grockowiak , William A. Coniglio , David Graf , Markos Skoulatos , Jyong-Hao Chen , Jan Gukelberger , Nicola Casati , Oksana Zaharko , Piero Macchi , Karl W. Krämer , Stan Tozer , Christopher Mudry , Bruce Normand , Christian Rüegg

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摘要

我们报道了金属-有机体系[(CuF $_2$ (H $_2$ O) $_2$ ) $_2$ pyrazine]中磁相互作用的非凡压力依赖性。在零压下，该材料实现了一种准二维(Q2D)自旋-1/2正方晶格海森堡反铁磁体。通过高压、高场磁化率测量，我们表明主导交换参数在压缩下连续减小至原来的二分之一。在18 kbar以上，发生了一个相变，诱导轨道重排，从而切换了维度，将准二维晶格转变为弱耦合链(准一维，Q1D)。我们通过结合详细的X射线和中子衍射结果以及基于自旋极化密度泛函理论的定量建模，解释了这两种现象的微观机制。

关键词

金属-有机量子反铁磁体压力依赖性维度切换自旋-1/2正方晶格海森堡反铁磁体轨道重排自旋极化密度泛函理论

引用

@article{arxiv.1606.08344,
  title  = {Giant pressure dependence and dimensionality switching in a metal-organic quantum antiferromagnet},
  author = {Björn Wehinger and Christoph Fiolka and Arianna Lanza and Rebecca Scatena and Mariusz Kubus and Audrey Grockowiak and William A. Coniglio and David Graf and Markos Skoulatos and Jyong-Hao Chen and Jan Gukelberger and Nicola Casati and Oksana Zaharko and Piero Macchi and Karl W. Krämer and Stan Tozer and Christopher Mudry and Bruce Normand and Christian Rüegg},
  journal= {arXiv preprint arXiv:1606.08344},
  year   = {2018}
}

备注

Revised manuscript. Crystallographic information files are contained in the source, please select Download "Other formats"

金属-有机量子反铁磁体中的巨大压力依赖性与维度切换

摘要

关键词

引用

备注

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