Figure 74.

Tuning magnetic vdW heterostructures. (A) Schematic of a high-pressure setup for a MTJ. Yellow line represents electrical leads.²² (B) Tunnel current I_t versus magnetic field H at pressures from 0 to 2.7 GPa in a bilayer CrI₃ MTJ. Insets show spin alignments and optical image of the MTJ.²² Panels (A, (B) are reproduced with permission from ref (22). Copyright 2019 Springer Nature. (C) Proposed vdW heterostructure where exchange (EX) and spin–orbit (SO) coupling can be swapped by an electric field. Cr₂Ge₂Te₆ magnetization is denoted by red arrows.⁸⁴⁰ Adapted with permission from ref (840). Copyright 2020 American Physical Society. (D, E) Dependence of RMCD on magnetic field in heterostructures of WSe₂ and trilayer (D)/bilayer (E) CrI₃ (shown in the insets).²⁰³ Panels (D, E) are reproduced with permission from ref (203). Copyright 2020 Springer Nature. (F–H) Photoemission and spin-dependent charge transfer in hBN encapsulated CrI₃/WSe₂ heterostructure. (F) A schematic of the heterostructure deposited on nanopillar array.⁸⁴¹ (G) Spin-dependent charge transfer from spin-polarized states in WSe₂ to CrI₃ results in the highly p-doped WSe₂, where an exciton can be turned into a localized charged trion (0D X⁺) via a hole capture process (H). Arrows in red and green (blue) denote the spin direction in WSe₂ (CrI₃).⁸⁴¹ Panels (F–H) are reproduced with permission under a Creative Commons CC BY license from ref (841). Copyright 2020 Springer Nature.