Cavity-Enhanced Linear Dichroism in a van der Waals Antiferromagnet

Abstract

Optical birefringence is a fundamental optical property of crystals widely used for filtering and beam splitting of photons. Birefringent crystals concurrently possess the property of linear dichroism (LD) that allows asymmetric propagation or attenuation of light with two different polarizations. This property of LD has been widely studied from small molecules to polymers and crystals but has rarely been engineered per will. Here, we use the newly discovered spin-charge coupling in van der Waals antiferromagnetic (AFM) insulator FePS3 to induce large in-plane optical anisotropy and consequently LD. We report that the LD in this AFM insulator is tunable both spectrally and magnitude-wise as a function of cavity coupling. We demonstrate near-unity LD in the visible-near infrared range in cavity-coupled FePS3 crystals and derive its dispersion as a function of cavity length and FePS3 thickness. Our results hold wide implications for use of cavity tuned LD as a diagnostic probe for strongly correlated quantum materials as well as opens new opportunities for miniaturized, on-chip beam-splitters and tunable filters.

arXiv comment14 pages, 5 figures

References in corpus (22)

• Layer-dependent Ferromagnetism in a van der Waals Crystal down to the Monolayer Limit
• Discovery of intrinsic ferromagnetism in 2D van der Waals crystals
• Gate-tunable Room-temperature Ferromagnetism in Two-dimensional Fe${}_3$GeTe${}_2$
• Ising-Type Magnetic Ordering in Atomically Thin FePS3
• Giant and nonreciprocal second harmonic generation from layered antiferromagnetism in bilayer CrI3
• Suppression of magnetic ordering in XXZ-type antiferromagnetic monolayer NiPS3
• Electronic and magnetic properties of single-layer MPX${}_3$ metal phosphorous trichalcogenides
• Giant optical anisotropy in transition metal dichalcogenides for next-generation photonics
• Giant birefringence in optical antenna arrays with widely tailorable optical anisotropy
• Charge-spin correlation in van der Waals antiferromagenet NiPS3
• Imaging the Néel vector switching in the monolayer antiferromagnet MnPSe${}_3$ with strain-controlled Ising order
• Near Unity Absorption in Van der Waals Semiconductors for Ultrathin Optoelectronics
• Highly Anisotropic Excitons and Multiple Phonon Bound States in a Van der Waals Antiferromagnetic Insulator
• Spin-Induced Linear Polarization of Excitonic Emission in Antiferromagnetic van der Waals Crystals
• Linear magneto-electric phase in ultrathin MnPS${}_3$ probed by optical second harmonic generation
• Hybrid Exciton-Plasmon-Polaritons in van der Waals Semiconductor Gratings
• The magnetic exchange parameters and anisotropy of the quasi-two dimensional antiferromagnet NiPS${}_3$
• Quasi-Two-Dimensional Magnon Identification in Antiferromagnetic FePS3 via Magneto-Raman Spectroscopy
• Observation of three-state nematicity in the triangular lattice antiferromagnet Fe${}_{1/3}$ NbS${}_2$
• Spin dynamics slowdown near the antiferromagnetic critical point in atomically thin FePS3
• Tuning the Néel temperature in an antiferromagnet: the case of NixCo1-xO microstructures
• Nanoengineered Curie Temperature in Laterally-Patterned Ferromagnetic Semiconductor Heterostructures

Cited by in corpus (12)

• Dilemma in All-optical Characterization of Single-layer NiI2 Multiferroics
• Progress and Prospects in Two-Dimensional Magnetism of van der Waals Materials
• Observation of giant surface second harmonic generation coupled to nematic orders in the van der Waals antiferromagnet FePS${}_3$
• Controlling the magnetic state of the proximate quantum spin liquid $\alpha$-RuCl${}_3$ with an optical cavity
• Controlling the broadband enhanced light chirality with L-shaped dielectric metamaterials
• Ultrafast laser-induced spin-lattice dynamics in the van der Waals antiferromagnet CoPS3
• Observation of three-state nematicity and domain evolution in atomically-thin antiferromagnetic NiPS3
• Magnetic Exciton-Polariton with Strongly Coupled Atomic and Photonic Anisotropies
• Quantitatively predicting angle-resolved polarized Raman intensity of anisotropic layered materials
• Laser-induced Demagnetization in van der Waals $XY$- and Ising-like Antiferromagnets NiPS${}_3$ and FePS${}_3$
• Giant Magneto-Optical Schäfer-Hubert Effect in Two-Dimensional van der Waals Antiferromagnets \textit{M}PS${}_3$ (\textit{M}=Mn, Fe, Ni)
• Raman Forbidden Layer-Breathing Modes in Layered Semiconductor Materials Activated by Phonon and Optical Cavity Effects