The graphene/Au/Ni interface and its application in the construction of a graphene spin filter
The graphene/Au/Ni interface and its application in the construction of a graphene spin filter
复制标题
石墨烯/Au/Ni界面及其在石墨烯旋转过滤器构建中的应用
作者：
A. A. Rybkina;A. Rybkin;V. K. Adamchuk;D. Marchenko;A. Varykhalov;J. Sánchez ;A. Shikin
提出了在石墨烯旋转过滤器模型中对石墨烯与铁磁电极的接触进行修改，从而允许恢复石墨烯电子结构。为此，建议在石墨烯和铁磁（Ni或Co）电极之间的界面中插入Au单层，以阻止石墨烯和Ni（Co）之间的强相互作用，从而防止石墨烯与Ni（Co）直接接触时产生的石墨烯电子结构的破坏。还建议在提供自旋电流传输的主石墨烯片和注入自旋电流的Au/Ni电极之间插入一个额外的缓冲石墨烯单层，其尺寸受到电极尺寸的限制。这将防止石墨烯的自旋输运特性影响接触现象，并消除石墨烯电子结构相对于金属费米能级的钉扎，从而确保注入电子有效流出到石墨烯中。还讨论了石墨烯/Au/Ni界面的自旋结构对增强石墨烯π态自旋轨道分裂的作用，并提出将其用于电子激发过程中的额外自旋选择。
A modification of the contact of graphene with ferromagnetic electrodes in a model of the graphene spin filter allowing restoration of the graphene electronic structure is proposed. It is suggested for this aim to intercalate into the interface between the graphene and the ferromagnetic (Ni or Co) electrode a Au monolayer to block the strong interaction between the graphene and Ni (Co) and, thus, prevent destruction of the graphene electronic structure which evolves in direct contact of graphene with Ni (Co). It is also suggested to insert an additional buffer graphene monolayer with the size limited by that of the electrode between the main graphene sheet providing spin current transport and the Au/Ni electrode injecting the spin current. This will prevent the spin transport properties of graphene from influencing contact phenomena and eliminate pinning of the graphene electronic structure relative to the Fermi level of the metal, thus ensuring efficient outflow of injected electrons into the graphene. The role of the spin structure of the graphene/Au/Ni interface with enhanced spin–orbit splitting of graphene π states is also discussed, and its use is proposed for additional spin selection in the process of the electron excitation.
影响因子：
2.1
作者：
Hill, Ernie W.;Geim, Andre K.;Blake, Peter
通讯作者：
Blake, Peter