Gulzar Ali J. , Sanjay Kumar Mohanty , Chittaranjan Nayak
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引用次数: 0
Abstract
This work examines the angle-insensitive multimode absorption characteristics of topological interface states (TISs) in a graphene-embedded hybrid one-dimensional (1D) topological photonic crystal (TPC) heterostructure composed of cascaded TPC. Angle-insensitive photonic bandgap (PBG), aroused in TPC, is achieved using the all-dielectric elliptical metamaterial defined by its filling factor, . Combining two different types of TPC i.e. TPC1 and TPC2, enables angle-insensitive excitation of TISs, leading to angle-insensitive absorption with the presence of graphene at the interface. To achieve multimode absorption, the structures are further cascaded, forming configurations such as TPC1-graphene-TPC2-graphene-TPC1 and TPC1-graphene-TPC2-graphene-TPC1-graphene-TPC2, which exhibit dual-mode, and triple-mode, absorption, respectively. The application of an external magnetic field and variation of Fermi level significantly enhances the maximum absorption, irrespective of the modes.
期刊介绍:
Physica B: Condensed Matter comprises all condensed matter and material physics that involve theoretical, computational and experimental work.
Papers should contain further developments and a proper discussion on the physics of experimental or theoretical results in one of the following areas:
-Magnetism
-Materials physics
-Nanostructures and nanomaterials
-Optics and optical materials
-Quantum materials
-Semiconductors
-Strongly correlated systems
-Superconductivity
-Surfaces and interfaces