We theoretically propose and study in-plane anisotropic acoustic phonon polaritons (APhPs) based on a layered structure consisting of a monolayer (or few layers) α-phase molybdenum trioxide (α-MoO3) sandwiched between two metal layers. We find that the APhPs in the proposed sandwiched structures are a canalization (highly directional) electromagnetic mode propagating along with the layers and at the same time exhibit extreme electromagnetic-field confinement surpassing any other type of phonon-polariton modes. When a double layer of α-MoO3 is sandwiched by two Au layers, twisting the two α-MoO3 layers can adjust the interlayer polaritonic coupling and thus manipulate the in-plane propagation of the highly confined APhPs. Our results illustrate that the metal-MoO3-metal sandwiched structures are a promising platform for light guiding and manipulation at ultimate scale.
Optically reconfigurable canalization of exciton-polaritons in a non-hyperbolic perovskite
Nanyang Technological University（南洋理工大学）；B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine（乌克兰国家科学院B.维尔金低温物理与工程研究所）；Institut Universitaire de France (IUF)（法兰西学院）；National University of Singapore（新加坡国立大学）
Compound surface-plasmon-polariton waves guided by a thin metal layer sandwiched between a homogeneous isotropic dielectric material and a structurally chiral material
Compound surface-plasmon-polariton waves guided by a thin metal layer sandwiched between a homogeneous isotropic dielectric material and a periodically multilayered isotropic dielectric material
Active tuning of highly anisotropic phonon polaritons in van der Waals crystal slabs by gated graphene
University of Oviedo（奥维耶多大学）；Center of Research on Nanomaterials and Nanotechnology, CINN (CSIC-Universidad de Oviedo)（纳米材料与纳米技术研究中心，CINN（CSIC-奥维耶多大学））；Donostia International Physics Center (DIPC)（圣塞巴斯蒂安国际物理中心）；Moscow Institute of Physics and Technology（莫斯科物理与技术学院）；IKERBASQUE, Basque Foundation for Science（伊克尔巴斯基克，巴斯克科学基金会）
Twistoptics in Planar Heterostructures with an Arbitrary Number of Rotated 3D Thin Layers and 2D Conductive Sheets
University of Oviedo（奥维耶多大学）；Center of Research on Nanomaterials and Nanotechnology CINN (CSIC–Universidad de Oviedo)（纳米材料与纳米技术中心CINN（西班牙国家研究委员会-奥维耶多大学））；Donostia International Physics Center (DIPC)（圣塞巴斯蒂安国际物理中心）；Center for Biomolecular Nanotechnologies, Istituto Italiano di Tecnologia（意大利理工学院生物分子纳米技术研究中心）；IKERBASQUE, Basque Foundation for Science（伊克尔巴斯科奎，巴斯克科学基金会）
