Collective oscillations of massless particles in two-dimensional(2D)Dirac materials offer an innovative route toward implementing atomically thin devices based on low-energy quasiparticle interactions.Strong confineme...Collective oscillations of massless particles in two-dimensional(2D)Dirac materials offer an innovative route toward implementing atomically thin devices based on low-energy quasiparticle interactions.Strong confinement of nearfield distribution on the 2D surface is essential to demonstrate extraordinary optoelectronic functions,providing means to shape the spectral response at the mid-infrared(IR)wavelength.Although the dynamic polarization from the linear response theory has successfully accounted for a range of experimental observations,a unified perspective was stll elusive,connecting the state-of-the-art developments based on the 2D Dirac plasmon-polaritons.Here,we review recent works on graphene and three-dimensional(3D)topological insulator(TI)plasmon-polariton,where the mid-IR and terahertz(THz)radiation experiences prominent confinement into a deep-subwavelength scale in a novel optoelectronic structure.After presenting general light-matter interactions between 2D Dirac plasmon and subwavelength quasiparticle excitations,we introduce various experimental techniques to couple the plasmonpolaritons with electromagnetic radiations.Electrical and optical controls over the plasmonic excitations reveal the hybridized plasmon modes in graphene and 3D Tl,demonstrating an intense near-field interaction of 2D Dirac plasmon within the highly-compressed volume.These findings can further be applied to invent optoelectronic biomolecular sensors,atomically thin photodetectors,and laser-driven light sources.展开更多
基金C.I.and H.C.were supported by the National Research Foundation of Korea(NRF)through the government of Korea(Grant No.NRF-2021R1A2C3005905,NRF-2020M3F3A2A03082472)Creative materials Discovery program(grant no.2017M3D1A1040834)+4 种基金Scalable Quantum Computer Technology Platform Center(grant no.2019R1A5A1027055)the core center program(2021R1A6C101B418)the Ministry of Education,and the Institute for Basic Science(IBS),Korea,under Project C ode IBS-R014-G1-2018-A1Part of this study(C.I.and H.C.)has been performed using failities at IBS Center for Correlated Electron Systems,Seoul National University.C.I.was supported by NRF through the government of Korea(Grant No.NRF-2021R1A6A3A14044225)This work was supported by Samsung Advanced Institute of technology in 2014-2018.
文摘Collective oscillations of massless particles in two-dimensional(2D)Dirac materials offer an innovative route toward implementing atomically thin devices based on low-energy quasiparticle interactions.Strong confinement of nearfield distribution on the 2D surface is essential to demonstrate extraordinary optoelectronic functions,providing means to shape the spectral response at the mid-infrared(IR)wavelength.Although the dynamic polarization from the linear response theory has successfully accounted for a range of experimental observations,a unified perspective was stll elusive,connecting the state-of-the-art developments based on the 2D Dirac plasmon-polaritons.Here,we review recent works on graphene and three-dimensional(3D)topological insulator(TI)plasmon-polariton,where the mid-IR and terahertz(THz)radiation experiences prominent confinement into a deep-subwavelength scale in a novel optoelectronic structure.After presenting general light-matter interactions between 2D Dirac plasmon and subwavelength quasiparticle excitations,we introduce various experimental techniques to couple the plasmonpolaritons with electromagnetic radiations.Electrical and optical controls over the plasmonic excitations reveal the hybridized plasmon modes in graphene and 3D Tl,demonstrating an intense near-field interaction of 2D Dirac plasmon within the highly-compressed volume.These findings can further be applied to invent optoelectronic biomolecular sensors,atomically thin photodetectors,and laser-driven light sources.
