The mechanism of anisotropic exchange interaction in superconducting iron arsenides

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• 作者：Xiangang Wan^a ; ^{xgwan@nju.edu.cn} ; Jinming Dong^a ; Xi Dai^b
• 关键词：First principle calculation ; Superconducting iron arsenides ; Magnetic exchange interaction
• 刊名：Physics Letters A
• 出版年：2012
• 期刊代码：57_03759601
• 类别：ph
• 出版时间：23 April, 2012
• 卷：376
• 期：21
• 页码：1759-1761
• 文件大小：131 K

摘要

Using a combination of linear response theory and constrained orbital hybridization approach, we study the mechanism of magnetic exchange interaction of iron-based superconductor. We reproduce the observed highly anisotropic exchange interaction, and our constrained orbital calculation unambiguously identifies that the anisotropic feature of exchange interaction is not sensitive to the unequal orbital population.