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arXiv 1708.07574cond-mat.str-el
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原始石墨烯的磁化强度与塞曼分裂和可变自旋轨道耦合

Magnetization in pristine graphene with Zeeman splitting and variable spin-orbit coupling

Federico Escudero, Lucas Sourrouille, Juan Sebastián Ardenghi, Paula Jasen

摘要:

本工作的目的是描述具有Rashba自旋轨道耦合和塞曼效应的石墨烯的自旋磁化。结果表明,磁化强度取决于自旋轨道耦合l,这是控制与外部电场。反过来,通过操纵的载流子的密度,它表明,自旋上和下朗道能级混合引入跳跃的自旋磁化。描述了两个磁振荡相位,可以通过施加的外部场进行调谐。通过考虑Rashba-自旋-轨道耦合时能级的填充情况,可以改变振荡的最大值和最小值,所得结果对设计不同构型的可变自旋-轨道耦合超晶格,发展自旋振荡和自旋滤波器具有重要意义.

英文摘要:

The aim of this work is to describe the spin magnetization of graphene with Rashba spinorbit coupling and Zeeman effect. It is shown that the magnetization depends critically on the spin-orbit coupling l that is controlled with an external electric field. In turn, by manipulating the density of charge carriers, it is shown that spin up and down Landau levels mix introducing jumps in the spin magnetization. Two magnetic oscillations phases are described that can be tunable through the applied external fields. The maximum and minimum of the oscillations can be alternated by taking into account how the energy levels are filled when the Rashba-spin-orbit coupling is turned on. The results obtained are of importance to design superlattices with variable spin-orbit coupling with different configurations in which spin oscillations and spin filters can be developed.

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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