论文标题
双层石墨烯中的量子非线性平面大厅效应：平面磁场的轨道效应
Quantum nonlinear planar Hall effect in bilayer graphene: an orbital effect of a steady in-plane magnetic field
论文作者
论文摘要
我们研究双层石墨烯的量子非线性平面霍尔在稳定的平面磁场下。当磁场被磁场打破时反转对称性时，由于浆果曲率偶极子在动量空间中，电荷电流发生在对外部电场的二阶响应中。我们已经表明，源自异常速度的非线性平面霍尔效应是由平面磁场对双层石墨烯中电子对电子中电子的轨道效应推断出来的。考虑到对称分析，我们得出了浆果曲率偶极矩对磁场成分的主要依赖性。此外，我们说明了如何使用外部平面磁场，栅极电压和费米能来控制和调节浆果曲率偶极子。
We study the quantum nonlinear planar Hall effect in bilayer graphene under a steady in-plane magnetic field. When time-reversal symmetry is broken by the magnetic field, a charge current occurs in the second-order response to an external electric field, as a result of the Berry curvature dipole in momentum space. We have shown that a nonlinear planar Hall effect originating from the anomalous velocity is deduced by an orbital effect of an in-plane magnetic field on electrons in bilayer graphene in the complete absence of spin-orbit coupling. Taking into account the symmetry analysis, we derived the dominant dependence of Berry curvature dipole moment on the magnetic field components. Moreover, we illustrate how to control and modulate the Berry curvature dipole with an external planar magnetic field, gate voltage, and Fermi energy.
