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arXiv 2204.07307cond-mat.mtrl-scicond-mat.str-el
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铁磁CrI3单分子膜的动力学平均场论研究

Dynamical mean-field theory study of a ferromagnetic CrI3 monolayer

Chang-Jong Kang, Jeonghoon Hong, Jeongwoo Kim

摘要:

采用密度泛函理论和动力学平均场论(DFT + DMFT)方法研究了CrI3铁磁单层膜的电子结构随温度和空穴掺杂浓度的变化.计算的磁化率符合居里定律,表明单层CrI3的铁磁性来源于Cr原子的局域磁矩,而不是Stoner型的巡游磁矩。DFT + DMFT计算表明,不同的相干温度为每个自旋组件,表现出明显的强自旋相关的电子相关效应在单层碘化铬。此外,我们还研究了单层CrI3的掺杂电子结构,发现其电子和磁性很容易通过空穴掺杂来调节。

英文摘要:

We have employed one of the well-known many-body techniques, density functional theory plus dynamical mean-field theory (DFT + DMFT), to investigate the electronic structure of ferromagnetic monolayer CrI3 as a function of temperature and hole-doping concentration. The computed magnetic susceptibility follows the Curie's law, indicating that the ferromagnetism of monolayer CrI3 originates from localized magnetic moments of Cr atoms rather than Stoner-type itinerant ones. The DFT + DMFT calculations show a different coherent temperature for each spin component, demonstrating apparent strong spin-dependent electronic correlation effects in monolayer CrI3. Furthermore, we have explored the doping-dependent electronic structure of monolayer CrI3 and found that its electronic and magnetic properties are easily tunable by the hole-doping.

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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