"Magnetic Gradient" edge magnetoplasmons in non-uniform magnetic field

20th International Conference on the Application of High Magnetic Fields in Semiconductor Physics

Balev, O.G.^1 ; Larkin, I.A.^2

Departamento de Física, Universidade Federal Do Amazonas, Manaus 69077-000, AM, Brazil^1

Department of Physics, Minho University, Braga 4710-057, Portugal^2

关键词: Density gradients;    Edge magnetoplasmons;    Magnetic field inhomogeneities;    Magnetic gradient;    Nonuniform magnetic fields;    Spatially homogeneous;    Strong magnetic fields;    Two-dimensional electron system (2DES);   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/456/1/012023/pdf
DOI  :  10.1088/1742-6596/456/1/012023

来源: IOP

【 摘 要 】

It is shown that laterally inhomogeneous strong magnetic field applied to otherwise spatially homogeneous two-dimensional electron system (2DES) allows "magnetic gradient" or special magnetic-edge magnetoplasmons (MEMPs). This mechanism is different from usual "density gradient" edge magnetoplasmons. Symmetric and antisymmetric families of MEMPs are obtained. They are localized at magnetic field inhomogeneity (magnetic-edge). Both symmetric and antisymmetric MEMPs have the modes of opposite chirality.