论文标题
紧张的曲折石墨烯纳米纤维中的复杂Landau级别和相关运输特性
Complex Landau levels and related transport properties in the strained zigzag graphene nanoribbons
论文作者
论文摘要
作用在石墨烯上的真实磁场（MFS）可以诱导平坦的真实兰道水平（LLS）。类比，石墨烯中的菌株可以产生明显的伪MF，从而触发分散伪LLS的出现。通过分析低能量有效的哈密顿量，我们介绍了有效的轨道MFS的概念，以整合实际的MFS和伪MFS。因此，我们获得了包含真实LLS和伪LLS的复杂LLS，并计算相关的传输特性。这些概念使我们能够发现推动伪LLS脆弱性的机制，以防止疾病和脱落，证明对真实的MFS和费米能量进行调整可以有效地改善稳健的性能。此外，还研究了山谷偏振电流的可调性，为Valleytronics设备设计开辟了新的可能性。
The real magnetic fields (MFs) acting on the graphene can induce flat real Landau levels (LLs). As an analogy, strains in graphene can produce significant pseudo MFs, triggering the appearance of dispersive pseudo LLs. By analyzing the low-energy effective Hamiltonian, we introduce the concept of the effective orbital MFs to integrate the real MFs and pseudo MFs. Accordingly, we obtain the complex LLs which incorporate the real LLs and pseudo LLs, and calculate the related transport properties. These concepts enable us to uncover the mechanisms driving the fragility of pseudo LLs against disorders and dephasing, proving that tuning the real MFs and Fermi energy can effectively improve the robust performances. Furthermore, the tunability of the valley-polarized currents is also studied, opening up new possibilities for the design of valleytronics devices.
