Graphene nanoribbon spin-photodetector

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August undefined, 2024

WebJul 15, 2024 · 1. Introduction. The exploration of carbon-based nanomaterials began in the 1980s with the invention of fullerenes. After introducing graphene in 2004, the research … WebFeb 18, 2024 · Graphene on the copper (Cu) foil grown by the CVD method (Hefei Microcrystalline Material Technology Co., Ltd) was used in the experiment. The polymethyl methacrylate (PMMA) photoresist was spin-coated on the graphene/Cu structure to act as the supporting layer of the graphene. The PMMA/graphene/Cu structure was split into 5 …

The spin-resolved I-V characteristics in P (a) and AP (b).

WebOct 16, 2013 · The manipulation of the spin configuration of graphene nanoribbon has been achieved experimentally by applying external magnetic fields 16. As can be seen, … WebApr 12, 2024 · By cutting graphene into a quasi-one-dimensional strip, a graphene nanoribbon (GNR), a bandgap can be opened through quantum confinement of the … how can i get my husband\u0027s attention

Analysis of Theory and Performance of Multi Layer Graphene …

WebJun 3, 2024 · Dynamic Control of High-Range Photoresponsivity in a Graphene Nanoribbon Photodetector Nanoscale Res Lett. 2024 Jun 3;15(1) :124. doi ... This … WebThe first important allowable spin-conserved transitions are marked. We set EF to zero. from publication: Graphene Nanoribbon Spin-Photodetector We introduce a concept to generate spin-polarized ... WebWe demonstrate tunable graphene nanoribbon-based photodetector for the wavelength range 5–12 μm. We leverage the width dependence of bandgap in nanoribbons, and … how many people celebrate mardi gras

Dual function armchair graphene nanoribbon-based spin …

Ahmed Zubair - Associate Professor - Bangladesh University of ...

WebThere is an energy difference between spin orientations in the outer orbital of the nitrogen atom, which can be detected and used as a probe for the magnetism at the edges of the nanoribbon. “The edge states can be clearly visualized, even when the nanoribbons are adsorbed on gold.” Graphene nanoribbon Nitrogen atom Hydrogen atom Carbon atom WebMar 12, 2015 · Abstract. In this work, a graphene quantum interference (QI) photodetector was simulated in two regimes of operation. The structure consists of a graphene nanoribbon, Mach-Zehnder interferometer (MZI), which exhibits a strongly resonant transmission of electrons of specific energies. In the first regime of operation (that of a … how can i get my husband to love me againWebMar 24, 2016 · Illustration of a graphene nanoribbon with zigzag edges and the precursor molecules used in its manufacture. Electrons on the two zigzag edges display opposite directions of rotation (spin ... how many people celebrate their birthday

"WebOct 6, 2014 · c, Schematic illustration of a nanoribbon-array infrared photodetector. d , Photovoltage map of one of the nanostructured contacts, similar to the one shown in b . Colour scale runs from −4 μV ... " - Graphene nanoribbon spin-photodetector

Graphene nanoribbon spin-photodetector

FIG. 4. Band structure and quantum efficiency diagrams …

WebDec 22, 2024 · December 22, 2024. Researchers at Berkeley Lab and UC Berkeley have discovered how to directly measure the unique magnetic properties of superthin graphene nanoribbons. The breakthrough could lead to high-speed, low-power nanoscale data storage technologies. Scanning tunneling microscopy image of a zigzag graphene nanoribbon. WebFeb 15, 2024 · We present the results of a numerical study on the characteristics of MoS2-based field-effect photodetectors (FEPhDs). These FEPhDs consist of 12-nm-long and …

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WebJul 15, 2024 · Photodetectors with zigzag and armchair graphene nanoribbon channels and asymmetric source and drain contacts: detectors for visible and solar blind applications. J. Appl ... Dual function armchair graphene nanoribbon-based spin-photodetector: optical spin-valve and light helicity detector. Appl. Phys. Lett., 105 (2014), p. 072407. CrossRef ... Webproperties.22–30 Graphene in its 1D form, the so called graphene nanoribbon (GNR), has also been intensively investigated as a promising material for realization of nanoelectronics and spintronic nanodevices.31–41 These features are due to graphe-ne's (hence GNRs') long spin relaxation and decoherence times

WebAug 18, 2014 · OSTI.GOV Journal Article: Dual function armchair graphene nanoribbon-based spin-photodetector: Optical spin-valve and light helicity detector Journal Article: … WebSep 26, 2024 · We introduce a concept to generate spin-polarized currents in graphene nanoribbons by using light radiation and a significant electron-electron interaction.

WebWe introduce a concept to generate spin-polarized currents in graphene nanoribbons by using light radiation and a significant electron-electron interaction. For this purpose, we … WebIntroduction. Graphene is a one-atomic-layer thick two-dimensional material made of carbon atoms arranged in a honeycomb structure. Its fascinating electrical, optical, and mechanical properties ignited enormous interdisciplinary interest from the physics, chemistry, and materials science fields. 1–3 The newly discovered properties pave the way to …

WebDec 1, 2016 · The structural and electronic properties of a hybrid of an armchair graphene nanotube and a zigzag graphene nanoribbon are investigated by first-principles spin-polarized calculations.

WebSep 26, 2024 · Generating highly spin-polarized current is one of the main quests in spintronics. The authors design and theoretically benchmark a spin-photovoltaic device … how can i get my hp printer to scanWebSep 18, 2024 · STS revealed an electronic bandgap of 1.38 eV for this new graphene-like nanoribbon, and the lowest unoccupied and highest occupied states were mainly distributed around the four- and eight-membered rings, respectively. Recently, ... The spin state was preserved, while the magnetic anisotropy was modified depending on the … how can i get my husband hardWebAug 19, 2014 · We show an armchair graphene nanoribbon channel connected between asymmetric ferromagnetic source-drain structure—i.e., p-type Co/Au/graphene source … how can i get my husband to wear lingerieWebApr 7, 2024 · An excellent photodetector (PD) can recognize all the properties of light, including intensity, frequency, and polarization. PDs capable of detecting polarized light need a specific optical structure or crystal structure. Lately, perovskite was used in polarization-sensitive PDs due to its controllable orientation growth and crystal structure ... how many people check their email dailyWebpatched graphene nanostripes to achieve photodetectors with high responsivity (0.6AW−1 at 0.8 mm and 11.5AW −1 at 20 mm) and ultrafast operation speed exceeding 50GHz from the visible to infrared regime [28]. Furthermore, a graphene nanoribbon spin-photodetector was presented by Zamani et al, possessing high quantum efﬁciency … how can i get my icloud password resetWebOct 11, 2009 · Graphene research so far has focused on electronic1,2,3,4,5,6 rather than photonic applications, in spite of its impressive optical properties7,8. These include its … how can i get my icloud email on my pcWebOct 6, 2024 · Tunable surface plasmon resonance-based graphene nanoribbon (GNR) terahertz (THz) polarizers with adjustable operating frequency are proposed in this work. While conventional THz polarizers lack robustness and tunability, recently reported graphene-based metastructure polarizers have complex fabrication processes and … how many people celebrate yule