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

• Author(s): Balev, O. G. ; Larkin, Ivan
• Date: 2013
• Persistent ID: http://hdl.handle.net/1822/26875
• Origin: RepositóriUM - Universidade do Minho
• Subject(s): Electron states and collective excitations in multilayers; Quantum wells; Mesoscopic; Nanoscale systems
• Document Type: Article
• Language: English

Description

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.