WebNov 4, 2024 · Figure 1 (a) Schematic illustration of NM/FM/FE-based spintronic THz emitter. Emitter consists of 4-nm Pt, 8-nm Co − Fe − B, 0.5-mm (011)-cut PMN − PT, and 100-nm ITO layer, respectively. External magnetic field is applied to magnetize the sample along the y axis and then removed before the test. External electric field is added to control the THz … WebWe systematically study the pump-wavelength dependence of terahertz pulse generation in thin-film spintronic THz emitters composed of a …
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WebOct 8, 2024 · We present a spintronic terahertz emitter based on a ferrimagnetic gadolinium-iron alloy (Gd x Fe 1−x) and platinum (Pt). We measure the magnetic-field-dependent terahertz emission of Gd x Fe 1−x /Pt spintronic heterostructures in the entire composition range (0 ≤ x ≤ 1). Excellent agreement is found between the measured data … WebDec 14, 2024 · An ultra-broadband terahertz (THz) emitter covering a wide range of frequencies from 0.1 to 10 THz is highly desired for spectroscopy applications. So far, spintronic THz emitters have been proven as one class of efficient THz sources with a broadband spectrum while the performance in the lower THz frequency range (0.1–0.5 …
WebMar 7, 2024 · To achieve a large terahertz (THz) amplitude from a spintronic THz emitter (STE), materials with 100% spin polarisation such as Co-based Heusler compounds as ferromagnetic layer are required. However, these compounds are known to loose their half-metallicity in the ultrathin film regime, as it is difficult to achieve L2 1 ordering, which has ... WebDec 13, 2024 · The demand for emerging applications at the terahertz frequencies motivates the development of novel and multifunctional devices for the generation and manipulation of terahertz waves. In this work, we report the realization of multifunctional spintronic-metasurface emitters, which allow simultaneous beam-steering and full …
WebSep 21, 2024 · Spintronic terahertz emitters, typically composed of nanometer-thin magnetic multilayer, have the outstanding capability of producing high-quality, broadband … WebSpintronic THz emitters (STEs) rely on spin current acceleration or decay, resulting in a burst of broadband THz emission, offering a new route to THz optics. Here, we …
WebJan 4, 2024 · Fascinatingly, a novel THz emitter was recently proposed and demonstrated in 2013, which is based on the spin related effects in ferromagnetic/nonmagnetic (FM/NM) …
WebHerein, we design a new generation of spintronic THz emitters composed of an alternating electromagnet and a miniaturized electronic controller. Not only can this new type of spintronic THz emitter largely simplify the ancillary equipment for spintronic sources, it also has a twice larger THz signal compared to the traditional THz time-domain ... brickhouse peiWebAverage power scaling of THz spintronic emitters in reflection geometry TIM VOGEL,1,* ALAN OMAR,1 SAMIRA MANSOURZADEH,1 FRANK WULF,1 NATALIA MARTÍN SABANÉS,2,3 MELANIE MÜLLER,4 TOM S. SEIFERT,2 ALEXANDER WEIGEL,5,6,7 GERHARD JAKOB,8 MATHIAS KLÄUI,8 IOACHIM PUPEZA,5,6 TOBIAS KAMPFRATH,2,4 AND CLARA J. … brickhouse patioWebApr 12, 2024 · An important issue for spintronic terahertz emitters is the analysis of spin-current generation and spin-to-charge conversion based on the emitted terahertz signal. This study shows that for such analysis it is mandatory to understand and account for local charging phenomena, which occur due to the limited area in which ultrafast currents are … covey homes westpointeWebJan 22, 2024 · A standard terahertz time-domain spectroscopy (THz-TDS) system, described in detail elsewhere 21, has been used for generation and measurements of THz waveforms from different spintronic emitters ... brick house paintersWebMay 20, 2024 · Recent developments in nanomagnetism and spintronics have enabled the use of ultrafast spin physics for terahertz (THz) emission. Spintronic THz emitters, consisting of ferromagnetic (FM)/non-magnetic (NM) thin film heterostructures, have demonstrated impressive properties for the use in THz spectroscopy and have great … brickhouse pelahatchie msWebApr 12, 2024 · Download Citation On Apr 12, 2024, Georg Schmidt and others published Charge Dynamics in Spintronic Terahertz Emitters Find, read and cite all the research … covey hollow rd culleoka tnWebApr 8, 2024 · 2024), whereas THz sources on the optical side include spintronic materials (Bull et al. 2024), molecular lasers, ... To overcome these drawbacks, a photomixer can be used as a THz emitter to produce continuous radiation, and a photoconductive antenna (PCA) can be used to generate pulsed THz radiation. The PCA can be used to generate … brick house patio ideas