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

Autor: Ortiz Jimenez V; Department of Physics, University of South Florida, Tampa, FL, 33620, USA.; Nanoscale Device Characterization Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA., Pham YTH; Department of Physics, University of South Florida, Tampa, FL, 33620, USA., Zhou D; Department of Physics, The Pennsylvania State University, University Park, PA, 16802, USA., Liu M; Department of Physics, The Pennsylvania State University, University Park, PA, 16802, USA., Nugera FA; Department of Physics, University of South Florida, Tampa, FL, 33620, USA., Kalappattil V; Department of Physics, University of South Florida, Tampa, FL, 33620, USA., Eggers T; Department of Physics, University of South Florida, Tampa, FL, 33620, USA., Hoang K; Center for Computationally Assisted Science and Technology and Department of Physics, North Dakota State University, Fargo, ND, 58108, USA., Duong DL; Department of Physics, Montana State University, Bozeman, MT, 59717, USA., Terrones M; Department of Physics, The Pennsylvania State University, University Park, PA, 16802, USA., Rodriguez Gutiérrez H; Department of Physics, University of South Florida, Tampa, FL, 33620, USA., Phan MH; Department of Physics, University of South Florida, Tampa, FL, 33620, USA.
Jazyk: angličtina
Zdroj: Advanced science (Weinheim, Baden-Wurttemberg, Germany) [Adv Sci (Weinh)] 2024 Feb; Vol. 11 (7), pp. e2304792. Date of Electronic Publication: 2023 Dec 10.
DOI: 10.1002/advs.202304792
Abstrakt: 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 2 , 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 2 , V-WSe 2 ). 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 2 /WS 2 , VSe 2 /MoS 2 ), 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.
(© 2023 The Authors. Advanced Science published by Wiley-VCH GmbH.)
Databáze: MEDLINE
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje