On the theory of three types of polaritons (phonon, exciton and plasmon polaritons)

41st Vietnam National Conference on Theoretical Physics

Ha, Duong Thi^1,2 ; Thuy, Dinh Thi^3 ; Hoa, Vo Thi^4 ; Van Tran, Thi Thanh^2 ; Viet, Nguyen Ai^5

Thai Nguyen University of Education, Thai Nguyen, Viet Nam^1

Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam^2

Thai Binh University of Medicine, Thai binh, Viet Nam^3

Quang Nam University, Quang Nam, Viet Nam^4

Institute of Physics, Vietnam Academy of Science and Technology, Ha Noi, Viet Nam^5

关键词: Broken symmetry;    Evanescent state;    Exciton-polariton;    Higgs mechanism;    Phonon-polariton;    Plasmon-polaritons;    Polaritons;    Surface plasmon polaritons;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/865/1/012007/pdf
DOI  :  10.1088/1742-6596/865/1/012007

来源: IOP

【 摘 要 】

We have investigated the similarities and difference between three well-known types of polaritons: phonon polariton, exciton polariton and surface plasmon polariton. For first two types (phonon polariton and exciton polariton) the interaction between photon and media can be expressed via a longitudinal-transversal splitting (LT-splitting), while for third type of polariton (surface plasmon polariton) via the boundary condition. Considering an analogy of these three types of polaritons, an effective LT-splitting was introduced for surface plasmon polariton. We discuss a possible existence of an evanescent state in the band gap of polaritons. Finally, the Nambu broken symmetry theory and Anderson-Higgs mechanism are discussed for lower branch of these polaritons.