论文标题
伪兰道水平，负应变电阻率和增强的扭曲石墨烯的热电器
Pseudo Landau levels, negative strain resistivity, and enhanced thermopower in twisted graphene nanoribbons
论文作者
论文摘要
作为对应用磁场的规范响应，金属的电子状态从根本上重组为Landau水平。在狄拉克金属中，只要将不均匀的应变应用于以与aharonov-bohm相类似的方式对空间调节电子跳，则可以预期没有磁场。我们在这里预测，石墨烯的扭曲的曲折纳米替亚表现出应变诱导的伪兰道水平未开发的，但在低能量下可分析可解决的分散体。这种色散伪兰道水平的存在导致负应变电阻率，表征$（1+1）$ - 维度手性异常，如果部分填充，并且在充分填充时可以大大增强热电器。
As a canonical response to the applied magnetic field, the electronic states of a metal are fundamentally reorganized into Landau levels. In Dirac metals, Landau levels can be expected without magnetic fields, provided that an inhomogeneous strain is applied to spatially modulate electron hoppings in a similar way as the Aharonov-Bohm phase. We here predict that a twisted zigzag nanoribbon of graphene exhibits strain-induced pseudo Landau levels of unexplored but analytically solvable dispersions at low energies. The presence of such dispersive pseudo Landau levels results in a negative strain resistivity characterizing the $(1+1)$-dimensional chiral anomaly if partially filled and can greatly enhance the thermopower when fully filled.
