Spintronic Sources of Ultrashort Terahertz Electromagnetic Pulses

Abstract

Spintronic terahertz emitters are novel, broadband and efficient sources of terahertz radiation, which emerged at the intersection of ultrafast spintronics and terahertz photonics. They are based on efficient spin-current generation, spin-to-charge-current and current-to-field conversion at terahertz rates. In this review, we address the recent developments and applications, the current understanding of the physical processes as well as the future challenges and perspectives of broadband spintronic terahertz emitters.

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• Basic obstacle for electrical spin-injection from a ferromagnetic metal into a diffusive semiconductor
• Spin Caloritronics
• Spin Transfer Torque Generated by the Topological Insulator Bi_2Se_3
• Crossover of Three-Dimensional Topological Insulator of Bi2Se3 to the Two-Dimensional Limit
• Efficient metallic spintronic emitters of ultrabroadband terahertz radiation
• Super-Diffusive Spin-Transport as a Mechanism of Ultrafast Demagnetization
• Electrodynamics of Correlated Electron Materials
• Engineering ultrafast spin currents and terahertz transients by magnetic heterostructures
• Quantized circular photogalvanic effect in Weyl semimetals
• Spin Pumping and Inverse Spin Hall Effect in Platinum: The Essential Role of Spin-Memory Loss at Metallic Interfaces
• Control over topological insulator photocurrents with light polarization
• Nonlinear phononics: A new ultrafast route to lattice control
• Significant Radiation Enhancement in Photoconductive Terahertz Emitters by Incorporating Plasmonic Contact Electrodes
• Non-invasive, near-field terahertz imaging of hidden objects using a single pixel detector
• Electrical control of the valley Hall effect in bilayer MoS2 transistors
• Fermi level dependent charge-to-spin current conversion by Dirac surface state of topological insulators
• Spin-pumping into surface states of topological insulator α-Sn, spin to charge conversion at room temperature
• Perspective: Ultrafast magnetism and THz spintronics
• An effective magnetic field from optically driven phonons
• Petahertz Spintronics
• Strong Rashba-Edelstein Effect-Induced Spin-Orbit Torques in Monolayer Transition-Metal Dichalcogenide/Ferromagnet Bilayers
• Harnessing non-local orbital-to-spin conversion of interfacial orbital currents for efficient spin-orbit torques
• Ultrafast transport of laser-excited spin polarized carriers in Au/Fe/MgO(001)
• Femtosecond control of electric currents at the interfaces of metallic ferromagnetic heterostructures
• Nonlinear light-matter interaction at terahertz frequencies
• Light-driven ultrafast phonomagnetism
• Determination of intrinsic spin Hall angle in Pt
• Observation of the inverse spin Hall effect in silicon
• Ultrafast photocurrents at the surface of the three-dimensional topological insulator ${\mathrm{Bi}}_2{\mathrm{Se}}_3$
• Ultrafast demagnetization of ferromagnetic transition metals: The role of the Coulomb interaction
• Polarizing an antiferromagnet by optical engineering of the crystal field
• Powerful and Tunable THz Emitters Based on the Fe/Pt Magnetic Heterostructure
• Surface state dominated spin-charge current conversion in topological insulator/ferromagnetic insulator heterostructures
• Ultrabroadband single-cycle terahertz pulses with peak fields of 300 kV cm${}^{-1}$ from a metallic spintronic emitter
• Broadband terahertz generation via the interface inverse Rashba-Edelstein effect
• Optimized Spintronic Terahertz Emitters Based on Epitaxial Grown Fe/Pt Layer Structures
• Hot electron driven enhancement of spin-lattice coupling in 4f ferromagnets observed by femtosecond x-ray magnetic circular dichroism
• Femtosecond formation dynamics of the spin Seebeck effect revealed by terahertz spectroscopy
• Observation of Inverse Edelstein Effect in Rashba-Split 2DEG between SrTiO3 and LaAlO3 at Room Temperature
• Probing the Interatomic Potential of Solids by Strong-Field Nonlinear Phononics
• Magneto-Optical Detection of the Spin Hall Effect in Pt and W Thin Films
• Ultrafast phononic switching of magnetization
• Maximizing Spin-Orbit Torque Generated by the Spin Hall Effect of Pt
• Ultrafast Spin-To-Charge Conversion at the Surface of Topological Insulator Thin Films
• Dissecting spin-phonon equilibration in ferrimagnetic insulators by ultrafast lattice excitation
• Surface orbitronics: new twists from orbital Rashba physics
• Picosecond Spin Orbit Torque Switching
• Terahertz spectroscopy for all-optical spintronic characterization of the spin-Hall-effect metals Pt, W and Cu${}_{80}$Ir${}_{20}$
• Probes for Ultrasensitive THz Nanoscopy
• Room-temperature spin-orbit torque in NiMnSb
• FMR-related phenomena in spintronic devices
• Anisotropic spin Hall effect from first principles
• Picosecond spin Seebeck effect
• Terahertz spin currents and inverse spin Hall effect in thin-film heterostructures containing complex magnetic compounds
• Highly-efficient spintronic terahertz emitter enabled by metal-dielectric photonic crystal
• Optical control of magnetization of micron-size domains in antiferromagnetic NiO single crystals
• Ultrafast spin-currents and charge conversion at 3d-5d interfaces probed by time-domain terahertz spectroscopy
• Principles of spintronic THz emitters
• Efficient Terahertz Generation Using Fe/Pt Spintronic Emitters Pumped at Different Wavelengths
• Terahertz Emission from Compensated Magnetic Heterostructures
• Phase-resolved Detection of Ultrabroadband THz Pulses inside a Scanning Tunneling Microscope Junction
• Impact of pump wavelength on terahertz emission of a cavity-enhanced spintronic trilayer
• Revealing the role of orbital magnetism in ultrafast laser-induced demagnetization in multisublattice metallic magnets by terahertz spectroscopy
• THz emission from Co/Pt bilayers with varied roughness, crystal structure, and interface intermixing
• Terahertz emission from anomalous Hall effect in a single-layer ferromagnet
• Modification of spintronic terahertz emitter performance through defect engineering
• Ultrafast and gigantic spin injection in semiconductors
• Consistency in Formulation of Spin Current and Torque Associated with a Variance of Angular Momentum
• Pure spin currents in magnetically ordered insulator/normal metal heterostructures
• Laser induced THz emission from femtosecond photocurrents in Co/ZnO/Pt and Co/Cu/Pt multilayers
• Driving ferromagnets into a critical region of a magnetic phase diagram
• Active spintronic-metasurface terahertz emitters with tunable chirality
• Complex THz and DC inverse spin Hall effect in YIG/Cu${}_{1-x}$Ir${}_x$ bilayers across a wide concentration range
• Determination of the spin Hall angle in single-crystalline Pt films from spin pumping experiments
• Particle-in-cell simulation of ultrafast hot-carrier transport in Fe/Au-heterostructures
• Interface reflectivity of a superdiffusive spin current in ultrafast demagnetization and THz emission
• $s$-$d$ model for local and nonlocal spin dynamics in laser-excited magnetic heterostructures
• Broadband terahertz probes of anisotropic magnetoresistance disentangle extrinsic and intrinsic contributions
• Evaluation of bulk-interface contributions to Edelstein magnetoresistance at metal/oxide interfaces
• Frequency-independent terahertz anomalous Hall effect in DyCo${}_5$, Co${}_{32}$Fe${}_{68}$ and Gd${}_{27}$Fe${}_{73}$ thin films from DC to 40 THz
• Co${}_2$FeAl full Heusler compound based spintronic terahertz emitter
• Ultrafast spin-charge conversion at SnBi${}_2$Te${}_4$/Co topological insulator interfaces probed by terahertz emission spectroscopy
• Average power scaling of THz spintronic emitters in reflection geometry
• Simulation of Hot-Carrier Dynamics and Terahertz Emission in Laser-Excited Metallic Bilayers
• Transition of laser-induced terahertz spin currents from torque- to conduction-electron-mediated transport
• THz pulses from optically excited Fe, Pt and Ta based Spintronic Heterostructures
• Probing optical spin-currents using THz spin-waves in noncollinear magnetic bilayers
• Terahertz Emission From an Exchange-Coupled Synthetic Antiferromagnet
• Spin-voltage-driven efficient terahertz spin currents from the magnetic Weyl semimetals Co${}_2$MnGa and Co${}_2$MnAl
• Spintronic emitters for super-resolution in THz-spectral imaging
• Impact of gigahertz and terahertz transport regimes on spin propagation and conversion in the antiferromagnet IrMn
• Temperature dependence of the interface spin Seebeck effect
• Valley Edelstein Effect in Monolayer Transition Metal Dichalcogenides
• Transfer Matrix description of heterostructured spintronics Terahertz emission
• Theory of spin-Hall magnetoresistance in the AC (terahertz) regime
• Spin-signal propagation in time-dependent noncollinear spin transport
• State-resolved ultrafast charge and spin dynamics in [Co/Pd] multilayers
• Spin to charge conversion in MoS${}_2$ monolayer with spin pumping
• Spin polarisation of ultrashort spin current pulses injected in semiconductors
• Nonlinear dynamics of electromagnetic field and valley polarization in WSe${}_2$ monolayer
• Ultrafast optical control over spin and momentum in solids
• The role of spin-lattice coupling for ultrafast magnetization changes in rare earth metals
• Ab-initio study of ultrafast spin dynamics in Gdx(FeCo){1-x} alloys
• Femtosecond laser comb driven perpendicular standing spin waves
• Spin injection characteristics of Py/graphene/Pt by gigahertz and terahertz magnetization dynamics driven by femtosecond laser pulse
• Solid-State Biased Coherent Detection of Ultra-Broadband Terahertz Pulses for high repetition rate, low pulse energy lasers

Cited by in corpus (27)

• Time-domain observation of ballistic orbital-angular-momentum currents with giant relaxation length in tungsten
• Transition of laser-induced terahertz spin currents from torque- to conduction-electron-mediated transport
• Accessing ultrafast spin-transport dynamics in copper using broadband terahertz spectroscopy
• Maximizing the electromagnetic efficiency of spintronic terahertz emitters
• Modelling of Spintronic Terahertz Emitters as a function of spin generation and diffusion geometry
• Ultrafast magnetization reversal in ferromagnetic spin-valves: an s-d model perspective
• Hybrid magnon-phonon cavity for large-amplitude terahertz spin-wave excitation
• Quantum-classical approach to spin and charge pumping and the ensuing radiation in THz spintronics: Example of ultrafast-light-driven Weyl antiferromagnet Mn${}_3$Sn
• Controlling polarization of spintronic THz emitter by remanent magnetization texture
• All-optical non-linear chiral ultrafast magnetization dynamics driven by circularly polarized magnetic fields
• Phonon-mediated strong coupling between a three-dimensional topological insulator and a two-dimensional antiferromagnetic material
• Inverse Rashba-Edelstein THz emission modulation induced by ferroelectricity in CoFeB/PtSe2/MoSe2//LiNbO3 systems
• Spatio-Temporal Electron Propagation Dynamics in Au/Fe/MgO(001) in nonequilibrium: Revealing Single Scattering Events and the Ballistic Limit
• Revealing subterahertz atomic vibrations in quantum paraelectrics by surface-sensitive spintronic terahertz spectroscopy
• Rotating spintronic terahertz emitter optimized for microjoule pump-pulse energies and megahertz repetition rates
• Enhanced laser-induced single-cycle terahertz generation in a spintronic emitter with a gradient interface
• Comparative Analysis of THz Signal Emission from SiO${}_2$/CoFeB/Metal Heterostructures: Wideband and High-Frequency THz Signal Advantage of PtBi-based Emitter
• Ultrafast Electron Temperature Dynamics in Spintronic Terahertz Emitters Studied by Optical-Pump Terahertz-Probe Spectroscopy
• Solid-State Biased Coherent Detection of Ultra-Broadband Terahertz Pulses for high repetition rate, low pulse energy lasers
• Ultrafast magnetization enhancement and spin current injection in magnetic multilayers by exciting the nonmagnetic metal
• Effective Magnetic Switching of THz Signal in Planar Structured Spintronic Emitters
• Laser-driven few-cycle Terahertz sources with high average power
• Magnetic domain scanning imaging using phase-sensitive THz-pulse detection
• Terahertz time-domain signatures of the inverse Edelstein effect in topological-insulator|ferromagnet heterostructures
• Revealing domain wall stability during ultrafast demagnetization
• High-efficiency Pt${}_{75}$Au${}_{25}$-based spintronic terahertz emitters
• Optimizing spin-based terahertz emission from magnetic heterostructures