2024 Ferromagnetic bilayer terahertz

Ferromagnetic bilayer terahertz

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August undefined, 2024

WebApr 1, 2024 · Both bilayers exhibit a tunability of the THz amplitude by external magnetic field both at 300 K and 100 K. Ferromagnetic resonance measurements demonstrate … WebJan 4, 2024 · For our experiments, we fabricate bilayer MoTe 2 samples with dual top and bottom gate electrodes for which the voltages V T and V B allow us to tune the carrier density, Δn = ϵ hBN ε o (V T /d ...

Topological valley transport of gapped Dirac magnons in …

WebRecently, ferromagnetic-heterostructure spintronic terahertz (THz) emitters have been recognized as one of the most promising candidates for next-generation THz … WebEpitaxial bilayer films of Bi(110) and Ni host a time-reversal symmetry breaking superconducting order with an unexpectedly high transition … psychotherapeuten hof

Monitoring laser-induced magnetization in FeRh by transient terahertz …

WebFerromagnetism is an unusual property that occurs in only a few substances. The common ones are the transition metals iron, nickel, cobalt and their alloys, and alloys of rare-earth metals. It is a property not just of … WebWe report on the electrodynamics of MnBi2Te4 thin films, an intrinsic magnetic topological material. We study its optical conductivity from terahertz (THz) to ultraviolet (UV) frequencies as a function of the film thickness, highlighting the presence of surface topological states superimposed on the bulk electrodynamics response. WebApr 10, 2024 · Download Citation On Apr 10, 2024, Kazuaki Ishibashi and others published Different spin relaxation properties observed in linearly and circularly polarized laser induced terahertz emission from ... psychotherapeuten hessen

Antiferromagnetic–Ferromagnetic Heterostructure‐Based …

[PDF] Active Spintronic-metasurface Terahertz Emitters …

WebAug 28, 2024 · Localization of the a 1g orbital of CrTe 2 produces an out-of-plane orientation of the magnetic moments, circumventing the restrictions of the Mermin–Wagner theorem and producing ferromagnetic long-range order in the two-dimensional limit. This orbital localization is enhanced by the CDW phase. WebJun 30, 2024 · In the antiferromagnetic phase of a heavy metal bilayer (FeRh / Pt), we observe a UMR that not only evolves strongly with an increasing magnetic field but also, more surprisingly, undergoes a sign change (the UMR changes direction) with respect to the field. This is largely different from the UMR seen in other ferromagnetic and … psychotherapeuten heilbronnWebAug 4, 2024 · Bilayer Heisenberg ferromagnetic insulators hold degenerate terahertz Dirac magnon modes associated with two opposite valleys of the hexagonal Brillouin … psychotherapeuten herbolzheim

"WebMay 18, 2024 · @article{osti_1444105, title = {Control of Terahertz Emission by Ultrafast Spin-Charge Current Conversion at Rashba Interfaces}, author = {Jungfleisch, Matthias B. and Zhang, Qi and Zhang, Wei and Pearson, John E. and Schaller, Richard D. and Wen, Haidan and Hoffmann, Axel}, abstractNote = {Here, we show that a femtosecond spin … " - Ferromagnetic bilayer terahertz

Ferromagnetic bilayer terahertz

THz emission from Fe/Pt spintronic emitters with L10

WebNov 23, 2024 · Using THz emission spectroscopy driven by femtosecond laser pulses, optical THz spin-current bursts at room temperature in the 2D van der Waals ferromagnetic Fe 3 GeTe 2 (FGT) integrated with Bi 2 Te 3 as a topological insulator are successfully realized. The symmetry of the THz radiation is effectively controlled by the optical … WebAug 11, 2024 · Recently, ferromagnetic‐heterostructure spintronic terahertz (THz) emitters have been recognized as one of the most promising candidates for next‐generation THz sources, owing to their peculiarities of high efficiency, high stability, low cost, ultrabroad bandwidth, controllable polarization, and high scalability.

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WebJul 6, 2024 · Efficient Terahertz Generation Using Fe/Pt Spintronic Emitters Pumped at Different Wavelengths. Abstract: Recent studies in spintronics (STs) have highlighted … WebMay 25, 2024 · The aluminum-based terahertz wire grid polarizer can be easily fabricated with low-cost techniques such as roll-to-roll and/or large-area electronics processes and …

WebJan 1, 2024 · In particular, bilayer structures of 2-nm Fe and 3-nm Pt epitaxial grown on 500-µm MgO and silicon substrates are used for spintronic THz emission studies at different optical pump wavelengths... WebFerromagnetic definition, noting or pertaining to a substance, as iron, that below a certain temperature, the Curie point, can possess magnetization in the absence of an external …

WebNov 1, 2024 · DOI: 10.1016/j.jmmm.2024.168791 Corpus ID: 244087262; Generation of Terahertz Transients from Co2Fe0.4Mn0.6Si Heusler alloy/ Heavy-Metal Bilayers @article{Heidtfeld2024GenerationOT, title={Generation of Terahertz Transients from Co2Fe0.4Mn0.6Si Heusler alloy/ Heavy-Metal Bilayers}, author={Sarah Heidtfeld and … WebThe terahertz magnetic field generates a torque on the magnetization which causes it to precess for about 1 ps, with a subpicosecond temporal lag from the driving force.

WebJan 22, 2024 · We report on generation of pulsed broadband terahertz radiation utilizing the inverse spin hall effect in Fe/Pt bilayers on MgO …

WebHere we report the possibility to excite ultra-short spin waves in ferromagnetic thin-films by using time-harmonic electromagnetic fields with terahertz frequency. Such ultra-fast excitation... psychotherapeuten hertenWebOct 22, 2016 · Using terahertz (10 (12) Hz) emission spectroscopy and exploiting the spin-orbit interaction, this work demonstrates the optical generation of electric photocurrents … hot air balloon tours yelp san diegoWebMay 20, 2024 · The spintronic bilayer is used as the source of the THz radiation. As shown in the inset, the fs-laser pulse meets the sample from the Pt side and the THz pulse travels through the metal layers and the substrate and then is collimated by an attached Si-lens. That way, the collection efficiency of our system increases significantly up to 30 times. hot air balloon to drawWebMay 23, 2016 · Figure 1a illustrates the basic principle of our spintronic terahertz emitter, with a bilayer structure consisting of ferromagnetic (FM) and nonferromagnetic (NM) metal thin films 44. The FM... psychotherapeuten holzmindenWebSep 22, 2024 · Stoichiometric FeRh exhibits a first order phase transition from antiferromagnetic (AFM) to ferromagnetic (FM) spin order at approximately 370 K. The transition temperature depends on the exact composition and growth procedure of the samples. 18,19 18. M. psychotherapeuten hirschbergWebJan 22, 2024 · Seifert et al. 7, have shown that the THz signal exhibits a maximum for a specific total thickness of the metallic bilayer, although, according to their equation of the terahertz field... hot air balloon toddler bed comforterWebJan 9, 2024 · [33-36] More recently, the emission of terahertz (THz) radiation in Co 2 FeAl/Pt and Co 2 Fe 0.4 Mn 0.6 Si/HM bilayers by 800 nm fs laser pulses was interpreted by the photoexcited spin current super-diffusing from Heusler alloy to HM layer. psychotherapeuten hofgeismar