Graphene nanoribbon spin-photodetector

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August undefined, 2024

WebLarge area Raman mapping indicated high uniformity ({\textgreater}97\% coverage) of monolayer graphene with immeasurable defects ({\textgreater}95\% defect-negligible) across the entire wafer. Key to these results is the phase transition of evaporated copper films from amorphous to (111) preferred crystalline, which resulted in subsequent ... WebMay 2, 2024 · The photodetector consists of a deep-depletion SiO 2 /Si well sandwiched between single-layer graphene (SLG) on top of the structure (for direct field-effect …

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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 … 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 … solemn head of organisation holding right hat

Photodetectors based on graphene, other two-dimensional

WebOct 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 … 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 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 photoresponsivity is about two orders of magnitude higher compared to that of a previous graphene-based photodetector. The photodetector exhibits a wide-range tunability via … smackers eye shadow

Dual function armchair graphene nanoribbon-based spin …

Graphene Nanoribbon Spin-Photodetector - NASA/ADS

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 ... 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 solemnities and feasts of the catholic churchWebMar 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 … smackers food

"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 … " - Graphene nanoribbon spin-photodetector

Graphene nanoribbon spin-photodetector

DFT calculations of graphene monolayer in presence of Fe …

WebGraphene nanoribbon spin-photodetector Sara Zamani and Rouhollah Farghadan Department of Physics, University of Kashan, Kashan,87317-53153, Iran (Dated: … WebIn P configuration, the electron tunneling channels for both α- and β-spin states are almost blocked off completely, but in AP configuration, the bias-polarity-dependent spin-polarized current ...

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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. 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 …

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 … WebAug 18, 2014 · OSTI.GOV Journal Article: Dual function armchair graphene nanoribbon-based spin-photodetector: Optical spin-valve and light helicity detector Journal Article: …

WebAug 19, 2014 · We show an armchair graphene nanoribbon channel connected between asymmetric ferromagnetic source-drain structure—i.e., p-type Co/Au/graphene source … 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 …

WebOct 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 …

Webdynamics (MD) simulations indicate that twisting a graphene Single-layer graphene (SLG) was grown on copper foil at 950 nanoribbon leads to a tunable modi cation of the electrical C in the presence of 35 sccm of methane and 8 sccm of structure of graphene.16–20 The ability to change the physical hydrogen via chemical vapor deposition. solemn collects good friday smackers frozen yogurt columbus msWebWe demonstrate tunable graphene nanoribbon-based photodetector for the wavelength range 5–12 μm. We leverage the width dependence of bandgap in nanoribbons, and … solemnity in romeo and julietWebFeb 3, 2024 · In the last decade, graphene photodetectors have been introduced and investigated in many works. In any photodetector, the separation of the photo-excited … solemnities catholicWebUnit cells are marked with the rectangle boxes drawn with a dotted lines and (m, n) denotes the dimensions of a particular unit cell. from publication: Graphene Nanoribbon Spin-Photodetector We ... solemity of our lady of the assumptionWebJul 1, 2024 · Graphene nanoribbon spin-photodetector. Phys. Rev. Appl. (2024) Xuechao Zhai et al. Valley-locked thermospin effect in silicene and germanene with asymmetric magnetic field induced by ferromagnetic proximity effect. Phys. Rev. B (2024) Xuechao Zhai et al. Valley–spin seebeck effect in heavy group-iv monolayers. smackers goodmanWebPreparation of B-doped graphene NPs and p-si/n-B-doped graphene diode In a typical synthesis of boron doped graphene NPs, 5 mL of carbon tetrachloride and 52 μL of boron tribromide were placed into 100 mL Teflon-lined stainless-steel autoclave, then 1.0 g of metallic potassium was rapidly added to the autoclave in an air-filled dry glove box. smackers lotion