Plasmonic topological quasiparticle on the nanometre and femtosecond scales

Dai, Yanan; Zhou, Zijing; Ghosh, Atreyie; Mong, Roger S. K.; Kubo, Atsushi; Huang, Chen‐Bin; Petek, Hrvoje

doi:10.1038/s41586-020-3030-1

Cited by 150 publications

(116 citation statements)

References 46 publications

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“…The ultrahigh nanometer spatial resolution enables versatile research on the micro‐photophysics, for instance, SPP, plasmonic skyrmion, ferroelectric domain, and carrier transportation. [ 17,18,39–43 ] Further application can extend to the nanoscale observation of Moiré superlattice in twisted vdW material like s‐SNOM. [ 16 ] In this report, we extend the PEEM technique to disclose the light–matter interaction in a semiconductor microcavity under resonant photoexcitation.…”

Section: Discussionmentioning

confidence: 99%

“…[ 13–16 ] PEEM is a wide‐field microscopy technique, which uses surface photoelectrons to image the photonic modes, especially for the surface plasmon polariton (SPP), e.g., the nanoplasmonic vortices, plasmonic topological state, and SPP propagation in a nanocircuit. [ 8,17–21 ] However, the investigation on photonic mode of semiconductor microcavities in real space is still limited at moment, especially, for the widely interested perovskite microcavity.…”

Section: Introductionmentioning

confidence: 99%

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Imaging and Controlling Photonic Modes in Perovskite Microcavities

Liu

et al. 2021

Advanced Materials

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Perovskite microcavities have excellent photophysical properties for integrated optoelectronic devices, such as nanolasers. Imaging and controlling the photonic modes within the cavity are fundamentally important to understand and develop applications. Here, photoemission electron microscopy (PEEM) is used to image the photonic modes within optical microcavities with a nanometer‐scale spatial resolution. From a CsPbBr3 microcavity, hybrid mode patterns are observed. Spatial frequency spectrum analysis on the patterns uncovers the characteristic cavity modes, which are modeled with transverse magnetic (TM) and transverse electric (TE) waves, and assigned to exciton–polariton modes. Based on this understanding, the light focus in a designed microcavity is imaged in real space and controlled by the light field polarization. The study confirms that the cavity modes in perovskites can be effectively observed by the PEEM technique under resonant excitation, which, in turn, promotes the design of optoelectronic devices based on perovskite microcavities.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Imaging and Controlling Photonic Modes in Perovskite Microcavities

Liu

et al. 2021

Advanced Materials

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“…Even for the SPP configuration, the loss mechanism does not affect the symmetry of the optical system, and it can be ignored by only considering the probability distribution of a single EM wave packet at the interface. [ 52,53 ] Moreover, from the former experimental results related to the photonic chiral textures, [ 11,12,17,18,31,45–48 ] one can find that the material loss primarily influences the intensity (photon number) but not the orientation of the vector. Thus, we can ignore material losses for convenience.…”

Section: Symmetry‐induced Chiral Spin Textures In Various Coordinate Systemsmentioning

confidence: 99%

“…[2][3][4][5] In addition, owing to the "intrinsic" spinorbit coupling governed by Maxwell's theory, many topology-like phenomena have been reported in real space, including polarization Möbius strips [6,7] and polarization vortices, [8,9] along with various chiral textures, such as optical domain walls, [10] photonic skyrmions, and merons. [11][12][13][14][15][16][17][18][19] Among these chiral textures, the magnetic skyrmion, [20][21][22] which was named after nuclear physicist Tony Skyrme, is a topologically nontrivial spin that forms via the spin-orbit interaction (Dzyaloshinskii-Moriya interaction: DMI) in an electronic system that lacks inversion symmetry and minimizes the magnetic energy cost. The recently discovered photonic skyrmions, which have chiral spin textures and can be considered as the optical manifestation of magnetic skyrmions, have attracted widespread interest in the fields of spin optics, chiral quantum optics, and photoelectric interaction.…”

Section: Introductionmentioning

confidence: 99%

“…[20][21][22]44] Till date, this resemblance has been noted only in phenomenological terms and most of the relevant research has focused on the experimental characterization and applications of the photonic chiral spin textures. [45][46][47][48] The formation and the stability of these textures are yet to be clarified in comparison to those of the condensed state system.…”

Section: Introductionmentioning

confidence: 99%

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Symmetry‐Protected Photonic Chiral Spin Textures by Spin–Orbit Coupling

Shi

et al. 2021

Laser & Photonics Reviews

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Chiral spin textures are widely researched in condensed matter systems and have shown potential for use in spintronics and storage applications. Photonic counterparts of these textures are observed in various optical systems with broken inversion symmetry. Unfortunately, the resemblances are only phenomenological. This work proposes a theoretical framework based on the variational theorem to show that the photonic chiral spin textures in an optical interface originate from the system's symmetry and relativity. Analysis of the rotational symmetry in optical systems indicates that the conservation of the total angular momentum is preserved from the local variations of spin vectors. Specifically, although the integral spin momentum does not carry net energy, the local spin momentum distribution, which determines the local subluminal energy transport and minimization variation of the square of the total angular momentum, results in the chiral twisting of the local spin vectors. The findings of this study deepen the understanding of the symmetries, conservative laws, and energy transport in optical systems, reveal the similarities in the formation mechanisms and the geometries of photonic and condensed-matter chiral spin textures, and have potential applications in chiral and spin photonics.

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New Nanophotonics Approaches for Enhancing the Efficiency and Stability of Perovskite Solar Cells

Cheng,

An,

Jen

et al. 2024

Advanced Materials

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Over the past decade, the power conversion efficiency (PCE) of perovskite solar cells (PSCs) has experienced a remarkable ascent, soaring from 3.8% in 2009 to a remarkable record of 26.1% in 2023. Many recent approaches for improving PSC performance employ nanophotonic technologies, from light harvesting and thermal management to the manipulation of charge carrier dynamics. Plasmonic nanoparticles (NP) and arrayed dielectric nanostructures have been applied to tailor the light absorption, scattering, and conversion, as well as the heat dissipation within PSCs to improve their PCE and operational stability. In this review, we begin with a concise introduction to define the realm of nanophotonics by focusing on the nanoscale interactions between light and surface plasmons or dielectric photonic structures. We then elaborate on the prevailing strategies that utilize resonance‐enhanced light‐matter interactions for boosting the PCE and stability of PSCs from light trapping, carrier transportation and thermal management perspectives, and discuss the resultant practical applications, such as semi‐transparent photovoltaics (PV), colored PSCs, and smart perovskite windows. Finally, we review the state‐of‐the‐art nanophotonic paradigms in PSCs, and highlight the benefits of these approaches in improving the aesthetic effects and energy‐saving character of PSC‐integrated buildings.This article is protected by copyright. All rights reserved

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Plasmonic topological quasiparticle on the nanometre and femtosecond scales

Cited by 150 publications

References 46 publications

Imaging and Controlling Photonic Modes in Perovskite Microcavities

Imaging and Controlling Photonic Modes in Perovskite Microcavities

Symmetry‐Protected Photonic Chiral Spin Textures by Spin–Orbit Coupling

New Nanophotonics Approaches for Enhancing the Efficiency and Stability of Perovskite Solar Cells

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