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Transition Metal Dichalcogenides: Making Atomic-Level Magnetism Tunable with Light at Room Temperature. | LitMetric

AI Article Synopsis

  • The study focuses on manipulating magnetization in 2D dilute magnetic semiconductors (2D-DMSs) using light, particularly in magnetic transition metal dichalcogenide (TMD) monolayers like V-doped TMDs.
  • It demonstrates that light can enhance magnetization through processes involving excess holes and trapped carriers in the semiconductor layers, as shown by experimental and theoretical approaches.
  • The research highlights the role of proximity and charge-transfer effects in 2D-TMD heterostructures, suggesting potential advancements in optically tunable magnetic applications for future nanodevices.

Article Abstract

The capacity to manipulate magnetization in 2D dilute magnetic semiconductors (2D-DMSs) using light, specifically in magnetically doped transition metal dichalcogenide (TMD) monolayers (M-doped TX , where M = V, Fe, and Cr; T = W, Mo; X = S, Se, and Te), may lead to innovative applications in spintronics, spin-caloritronics, valleytronics, and quantum computation. This Perspective paper explores the mediation of magnetization by light under ambient conditions in 2D-TMD DMSs and heterostructures. By combining magneto-LC resonance (MLCR) experiments with density functional theory (DFT) calculations, we show that the magnetization can be enhanced using light in V-doped TMD monolayers (e.g., V-WS , V-WSe ). This phenomenon is attributed to excess holes in the conduction and valence bands, and carriers trapped in magnetic doping states, mediating the magnetization of the semiconducting layer. In 2D-TMD heterostructures (VSe /WS , VSe /MoS ), the significance of proximity, charge-transfer, and confinement effects in amplifying light-mediated magnetism is demonstrated. We attributed this to photon absorption at the TMD layer that generates electron-hole pairs mediating the magnetization of the heterostructure. These findings will encourage further research in the field of 2D magnetism and establish a novel design of 2D-TMDs and heterostructures with optically tunable magnetic functionalities, paving the way for next-generation magneto-optic nanodevices.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10870067PMC
http://dx.doi.org/10.1002/advs.202304792DOI Listing

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