Figure 71.
Contact methods for exfoliated vdW magnets. (A) Schematic of a Cr2Ge2Te6 flake top contacted with metal electrodes under an ion-liquid gate.86 Adapted with permission from ref (86). Copyright 2020 Springer Nature. (B, C) Optical image of a 5.8 nm-thick Fe3GeTe2 (B)123 and a 28 nm-thick Fe5GeTe2 (C)87 flake contacted from the bottom with prepatterned metal electrodes. In (B) the red dashed line is the Fe3GeTe2 and the yellow dashed line is the hBN. The red scale bar is 10 μm.123 In (C) the scale bar is 20 μm.87 Panel (B) was adapted with permission from ref (123). Copyright 2018 Springer Nature. Panel (C) was adapted with permission from ref (87). Copyright 2019 American Chemical Society. (D–G) Schematics (D, F) and corresponding false-colored optical images (E, G) of CrI3 flakes contacted by graphene electrodes for lateral (D, E) and tunneling (F, G) transport measurements.15 In (E) and (G), the scale bars are both 5 μm.15 Panels (D–G) are reproduced with permission from ref (15). Copyright 2018 Springer Nature.