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arXiv 1402.0646cond-mat.mes-hall
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Rashba耦合诱导单层石墨烯中导电电子的自旋磁化率和磁相变

Rashba coupling induced spin susceptibility and magnetic phase transition of conduction electrons in monolayer graphene

Fatemeh Delkhosh, A. Phirouznia

摘要:

利用Kubo形式,系统的磁性在线性区域进行了研究。主要计算了非磁性衬底对自旋极化率的影响。结果表明,Rashba耦合相互作用在系统的磁响应函数中起着重要作用,并且这种自旋轨道耦合作用可以通过外加栅电压来有效控制,因此是非常显著的.最重要的是,它表明,在存在的Rashba相互作用的磁性相变可以观察到。该磁相对应于在外部磁场的某一特定频率下发生的传导电子的磁序。

英文摘要:

Using the Kubo formalism, the magnetic properties of the system in the linear regime have been investigated. Mainly the effect of non-magnetic substrate on the spin susceptibility is calculated. Results show that the Rashba coupling interaction has a central role in the magnetic response function of the system and it is really remarkable since this type of spin orbit coupling can be effectively controlled by an external gate voltage. Most importantly it was shown that, in the presence of the Rashba interaction a magnetic phase transition could be observed. This magnetic phase corresponds to a magnetic order of conduction electrons that takes place at some especial frequency of external magnetic field.

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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