论文标题
理想的石墨烯纳米骨本
Fabry-Perot and Aharonov-Bohm interference in ideal graphene nanoribbons
论文作者
论文摘要
提出了理想石墨烯纳米纤维中电子磁电流的量子力学计算。在非相互作用的理论中，可以预测，附着在宽铅上的理想色带应揭示磁场中的Fabry-Perot电导振荡。在考虑了库仑相互作用的理论中，振荡模式应宁愿由Aharonov-Bohm干扰效应确定。这两种理论都可以预测，由于在连接带和铅之间的界面上存在强烈的电子散射，但在色带内部，尽管存在不同的结构。电导振荡是通过这些准结合状态通过这些准稳定状态进行反向散射的结果。
Quantum-mechanical calculations of electron magneto-transport in ideal graphene nanoribbons are presented. In noninteracting theory, it is predicted that an ideal ribbon that is attached to wide leads should reveal Fabry-Perot conductance oscillations in magnetic field. In the theory with Coulomb interaction taken into account, the oscillation pattern should rather be determined by the Aharonov-Bohm interference effect. Both of these theories predict the formation of quasi-bound states, albeit of different structures, inside the ribbon because of strong electron scattering on the interfaces between the connecting ribbon and the leads. Conductance oscillations are a result of resonant backscattering via these quasi-bound states.
