Direct photoluminescence probing of ferromagnetism in monolayer two-dimensional CrBr3

Abstract

Atomically thin magnets are the key element to build up spintronics based on two-dimensional materials. The surface nature of two-dimensional ferromagnet opens up opportunities to improve the device performance efficiently. Here, we report the intrinsic ferromagnetism in atomically thin monolayer CrBr3, directly probed by polarization resolved magneto-photoluminescence. The spontaneous magnetization persists in monolayer CrBr3 with a Curie temperature of 34 K. The development of magnons by the thermal excitation is in line with the spin-wave theory. We attribute the layer-number dependent hysteresis loops in thick layers to the magnetic domain structures. As a stable monolayer material in air, CrBr3 provides a convenient platform for fundamental physics and pushes the potential applications of the two-dimensional ferromagnetism.

27 pages, 10 figures

References in corpus (1)

• Dirac magnons in honeycomb ferromagnets

Cited by in corpus (69)

• Magneto-optics in a van der Waals magnet tuned by self-hybridized polaritons
• Highly Anisotropic Excitons and Multiple Phonon Bound States in a Van der Waals Antiferromagnetic Insulator
• Twisted Magnetic Van der Waals Bilayers: An Ideal Platform for Altermagnetism
• Tuning Inelastic Light Scattering via Symmetry Control in 2D Magnet CrI${}_3$
• Dynamic Magnetic Crossover at the Origin of the Hidden-Order in van der Waals Antiferromagnet CrSBr
• In-plane magnetic domains and Néel-like domain walls in thin flakes of the room temperature CrTe${}_2$ van der Waals ferromagnet
• Interaction-stabilized topological magnon insulator in ferromagnets
• Magnetic field effect on topological spin excitations in CrI${}_3$
• Microscopic origin of multiferroic order in monolayer NiI${}_2$
• Atomic-scale visualization of multiferroicity in monolayer NiI${}_2$
• Opportunities in Electrically Tunable 2D Materials Beyond Graphene: Recent Progress and Future Outlook
• Visualizing Atomically-Layered Magnetism in CrSBr
• Strength of effective Coulomb interaction in two-dimensional transition-metal Halides MX${}_2$ and MX${}_3$ (M=Ti, V, Cr, Mn, Fe, Co, Ni; X=Cl, Br, I)
• Spin Dynamics in van der Waals Magnetic Systems
• Multifunctional Two-dimensional van der Waals Janus Magnet Cr-based Dichalcogenide Halides
• Nearly room temperature ferromagnetism in pressure-induced correlated metallic state of van der Waals insulator CrGeTe${}_3$
• Intrinsic ferromagnetism and restrictive thermodynamic stability in MA${}_2$N${}_4$ and Janus VSiGeN${}_4$ monolayers
• Two-Dimensional Bipolar Magnetic Semiconductor with High Curie Temperature and Electrically Controllable Spin Polarization Realized in Exfoliated Cr(pyrazine)${}_2$ Monolayer
• Gate-tunable proximity effects in graphene on layered magnetic insulators
• Tunable magnetism in ferroelectric α-In2Se3 by hole-doping
• Excitons in Bulk and Layered Chromium Tri-Halides: From Frenkel to the Wannier-Mott Limit
• Ferroic orders in two-dimensional transition/rare-earth metal halides
• Recent progress in the JARVIS infrastructure for next-generation data-driven materials design
• Optical and magneto-optical properties of ferromagnetic monolayer CrBr${}_3$: A first-principles $GW$ and $GW$ plus Bethe-Salpeter equation study
• Electronic Structure of Chromium Trihalides beyond Density Functional Theory
• First principles vs second principles: Role of charge self-consistency in strongly correlated systems
• Systematic DFT+U and Quantum Monte Carlo benchmark of magnetic two-dimensional (2D) CrX${}_3$ (X = I, Br, Cl, F)
• Massless Dirac magnons in the two dimensional van der Waals honeycomb magnet CrCl3
• Ab initio calculation of the effective Coulomb interactions in MX2 (M=Ti, V, Cr, Mn, Fe, Co, Ni; X=S, Se, Te): intrinsic magnetic ordering and Mott insulating phase
• Type II multiferroic order in two-dimensional transition metal halides from first principles spin-spiral calculations
• Designing magnetic properties in CrSBr through hydrostatic pressure and ligand substitution
• AC susceptometry of 2D van der Waals magnets enabled by the coherent control of quantum sensors
• Effects of Fe deficiency and Co substitution in polycrystalline and single crystals of Fe${}_3$GeTe${}_2$
• Antiferromagnetism in two-dimensional materials: progress and computational challenges
• Magnetic Anisotropy in Two-dimensional van der Waals Magnetic Materials and Their Heterostructures: Importance, Mechanisms, and Opportunities
• Ab initio self-trapped excitons
• Anharmonicity reveals the tunability of the charge density wave orders in monolayer VSe${}_2$
• Physical Vapor Transport Growth of Antiferromagnetic CrCl${}_3$ Flakes Down to Monolayer Thickness
• 2D ferromagnetism at finite temperatures under quantum scrutiny
• Understanding and tuning magnetism in layered Ising-type antiferromagnet FePSe3 for potential 2D magnet
• Roadmap on Quantum Magnetic Materials
• Two-dimensional Heisenberg models with materials-dependent superexchange interactions
• 2D correlations in the van der Waals ferromagnet CrBr${}_3$ using high frequency electron spin resonance spectroscopy
• Crystal structure evolution in the van der Waals transition metal trihalides
• Electric field control of moiré skyrmion phases in twisted multiferroic NiI${}_2$ bilayers
• Controlling magnetism through Ising superconductivity in magnetic van der Waals heterostructures
• Above-room-temperature intrinsic ferromagnetism in ultrathin van der Waals crystal Fe${}_{3+x}$GaTe${}_2$
• Room temperature ferromagnetic semiconductors through metal-semiconductor transition in monolayer MnSe2
• Acousto-magnonic spin Hall effect in honeycomb antiferromagnets
• Giant gate-tunable renormalization of spin-correlated flat-band states and bandgap in a 2D magnetic insulator
• Ferroelectric valley valves with graphene/MoTe${}_2$ van der Waals heterostructures
• Toward improved property prediction of 2D materials using many-body quantum Monte Carlo methods
• Long-range anisotropic Heisenberg ferromagnets and electrically tunable ordering
• Generic Approach to Intrinsic Magnetic Second-order Topological Insulators via Inverted $p-d$ Orbitals
• Electrically tunable room-temperature ferromagnetism in CrBr${}_3$
• Enhanced Magnetization by Defect-Assisted Exciton Recombination in Atomically Thin CrCl${}_3$
• Exciton transport driven by spin excitations in an antiferromagnet
• Magnetization dependent tunneling conductance of ferromagnetic barriers
• Quantum selection of order and dynamic properties of Kitaev-Heisenberg ferromagnet on a triangular lattice
• Resonant X-ray spectroscopies on Chromium $3\text{d}$ orbitals in CrSBr
• Quantum Stoner-Wohlfarth model of two-dimensional single domain magnets
• Magnetic Proximity Effect in 2D Ferromagnetic CrBr3/Graphene van der Waals Heterostructures
• Tunable Magneto-optical Kerr effect in two-dimensional non-collinear antiferromagnetic material HfFeCl6
• Excitonic optical absorption in strained monolayer CrSBr
• Impact of the honeycomb spin-lattice on topological magnons and edge states in ferromagnetic 2D skyrmion crystals
• Band Splitting and Long-lived Carrier Recombination in Ferromagnetic CrSiTe3 Nanosheets
• Self-consistent renormalized spin-wave theory of magnetic and topological transitions in two-dimensional honeycomb ferromagnets
• Activated Migration of Localized Ligand-Field Excitons in Atomically Thin CrCl3
• Layered CrGe1-xSe3+y with Cr Kagome Lattice and Antiferromagnetic Ordering