A5064428093- 2D Materials and Applications
- Magnetic properties of thin films
- Plasmonic and Surface Plasmon Research
- Topological Materials and Phenomena
- Strong Light-Matter Interactions
- Perovskite Materials and Applications
- Metamaterials and Metasurfaces Applications
- Mechanical and Optical Resonators
- Multiferroics and related materials
- Molecular spectroscopy and chirality
- Molecular Junctions and Nanostructures
- Advanced Condensed Matter Physics
- Liquid Crystal Research Advancements
- Cold Atom Physics and Bose-Einstein Condensates
- Orbital Angular Momentum in Optics
- Quantum Dots Synthesis And Properties
- Photonic Crystals and Applications
- Quantum and electron transport phenomena
- Magnetic and transport properties of perovskites and related materials
- Advanced biosensing and bioanalysis techniques
- Diamond and Carbon-based Materials Research
Institute of Semiconductors
2022-2025
Chinese Academy of Sciences
2022-2025
University of Chinese Academy of Sciences
2022-2025
Non-collinear antiferromagnetic Weyl semimetals, combining the advantages of a zero stray field and ultrafast spin dynamics, as well large anomalous Hall effect chiral anomaly fermions, have attracted extensive interest. However, all-electrical control such systems at room temperature, crucial step toward practical application, has not been reported. Here, using small writing current density around 5 × 106 A·cm-2, we realize current-induced deterministic switching non-collinear...
Kagome antiferromagnetic semimetals such as Mn3Sn have attracted extensive attention for their potential application in spintronics. Realizing high manipulation of kagome spin states at room temperature can reveal rich emergent phenomena resulting from the quantum interactions between topology, spin, and correlation. Here, we achieved tunable textures through symmetry design by controlling alternate heavy-metal Pt thicknesses. The various topological were predicted with theoretical...
Broken symmetry plays a pivotal role in determining the macroscopic electrical, optical, magnetic, and topological properties of materials. Circular dichroism (CD) has been widely employed to probe broken various systems, from small molecules bulk crystals, but designing CD responses on demand remains challenge, especially for antiferromagnetic Here we develop cavity-enhanced technique sensitively magnetic order van der Waals antiferromagnet FePS3. By introducing interfacial inversion...
Chiral optical metamaterials have attracted a great deal of attention due to their intriguing properties with respect fundamental research and practical applications. For achiral structures, the system composed obliquely incident light has extrinsic chirality can produce circular dichroism (CD) effect. However, there been few studies on azimuth-dependent CD spectra that greatly improved our understanding phenomena caused by external chirality. In this work, we experimentally studied...
Abstract 2D van der Waals (vdW) layered materials exhibit significant exciton binding energy and versatile stacking options, making them ideal for room‐temperature exciton‐polariton devices used in low‐threshold lasing, nonlinear optical switching, quantum computing. However, most existing systems depend on external microcavities coupled with single monolayers, leading to limited controllability increased costs. Here, cavity‐free vdW magnet CrSBr crystals are presented that feature...
Controlling magnetic order via external fields or heterostructures enables precise manipulation and tracking of spin exciton information, facilitating the development high-performance optical valves. However, weak magneto-optical signals instability two dimensional (2D) antiferromagnetic (AFM) materials have hindered comprehensive studies on complex coupling between excitons in bulk-like systems. Here, we leverage spectroscopy to reveal impact exciton-phonon exciton-magnetic which remains...
Non-collinear antiferromagnets with a D019 hexagonal structure have attracted tremendous attention for their potential applications in topological spintronics. Exploring the relationship between spin texture and electronic band is crucial understanding physical nature of these chiral antiferromagnets. Here, we systematically investigated variation non-collinear antiferromagnet Mn3Sn film using magnetic circular dichroism (MCD) spectroscopy. The evolution Mn from coplanar inverted triangular...
Abstract Layered transition metal dichalcogenides (TMDs) are a promising platform for new photonic and optoelectronic devices. Exciton‐phonon interaction is critical in determining their characteristics such as the exciton coherence lifetime linewidth. However, linewidth obtained by conventional reflection spectrum greatly affected background signals, research into exciton‐phonon coupling difference induced stacking‐order multi‐layer structures still lacking. In this work,...
Tunable resonator is a powerful building block in fields like color filtering and optical sensing. The control of its polarization characteristics can significantly expand the applications. Nevertheless, methods for dynamic tuning are limited. Here, magnetically regulated circular polarized resonant microcavity demonstrated with an ultrathin ferrimagnetic composite metal layer Ta/CoTb. We successfully tuned cavity frequency performance. A huge magnetic dichroism (MCD) signal (∼3.41%)...
Fe3GeTe2 (FGT) is one of the most attractive two-dimensional (2D) magnetic metals owing to long-range ferromagnetic order and high Curie temperature. The electronic transition great importance for understanding physics spintronic applications in FGT. Although properties FGT are well known, band structure both theory experiment have been rarely studied. Here, we use density functional (DFT) circular dichroism (MCD) technique study phase transitions at energy 1.6 2.2 eV were observed through...
2D van der Waals (vdW) magnetic semiconductors offer an ideal platform to achieve exciton-polaritons correlated with orders for developing solid-state quantum, spintronic, and photonic devices. However, in the as-demonstrated systems, coupling strength, light velocity, effective mass of are almost inert external field. Here, we report experimental observation giant tuning B vdW magnet CrSBr crystals. The Rabi splitting energy is tuned up 100 meV within a moderate 0.45 T in-plane field due...
Broken symmetry plays a pivotal role in determining the macroscopic electrical, optical, magnetic, and topological properties of materials. Circular dichroism (CD) has been widely employed to probe broken various systems, from small molecules bulk crystals, but designing CD responses on demand remains challenge, especially for antiferromagnetic Here, we develop cavity-enhanced technique sensitively magnetic order van der Waals antiferromagnet FePS3. By introducing interfacial inversion...
Dielectric meta-surfaces have emerged as an effective way for fabricating chiral optical devices, and the are usually constituted by periodic meta-atom structures. Here, we report a meta-surface consisting of nonchiral silicon nitride rectangular nanorods. The hotspots generated between staggered nanorods due to coupling two nearest neighbor nanorod units. 14.6% macroscopic circular dichroism (CD) is achieved experimentally with larger area Meanwhile, demonstrate that wavelength tuning...
Non-collinear antiferromagnetic Weyl semimetals, combining the advantages of a zero stray field and ultrafast spin dynamics as well large anomalous Hall effect chiral anomaly fermions, have attracted extensive interests. However, all-electrical control such systems at room temperature, crucial step toward practical applications, has not been reported. Here using small writing current around 5*10^{6} A/cm^{2}, we realize current-induced deterministic switching non-collinear antiferromagnet...