Research / 2020 / Article / Fig 6

Review Article

Recent Advances in Two-Dimensional Magnets: Physics and Devices towards Spintronic Applications

Figure 6

(a) Schematic illustration of magnetic tunnel junction based on 2D chromium trihalides. (b–d) Tunneling current vs. out-of-plane magnetic field of CrI3 bilayer (b), trilayer (c), and tetralayer (d) at 2 K. (e) Magnetoresistance of 14-layer CrI3 under various temperatures. (f) as a function of applied magnetic field and DC bias voltage in bilayer CrI3 at 300 mK. (g) Tunneling magnetoresistance ratio vs. DC bias voltage of tetralayer CrI3 under different gate voltages at 2 K. (h) Transition mechanism of spin states in tetralayer CrI3 under out-of-plane and in-plane applied field, respectively. (i, j) Tunneling resistance and interlayer magnetic coupling in bilayer CrI3 at 10, 20, 30, 40, and 50 K (i) and bilayer CrCl3 at 1.4, 10, 20, 30, and 40 K (j). (k) Magnetoresistance of bilayer, trilayer, and tetralayer CrCl3 at 4 K. (l) Temperature-dependent spin-flip field (T) (blue), (T) (orange), and layer magnetization (red) for a pentalayer CrCl3. (m) Tunneling resistance and interlayer magnetic coupling in bilayer CrBr3 at 1.4 K. (n) Measured inter-Landau-level (LL) tunneling conductance as a function of temperature and DC bias in hexalayer CrBr3 at 17.5 T. (o) Schematic diagram of inelastic and elastic tunneling between the LLs of the two graphene layers. Panel (a) is reproduced with permission from ref. [73], copyright 2019 Nano Letters. Panels (b–d) are reproduced with permission from ref. [74], copyright 2018 Science. Panels (e, h) are reproduced with permission from ref. [75], copyright 2018 Nano Letters. Panel (f) is reproduced with permission from ref. [76], copyright 2018 Science. Panel (g) is reproduced with permission from ref. [77], copyright 2019 Nano Letters. Panels (i, j, m) are reproduced with permission from ref. [78], copyright 2019 PNAS. Panel (k) is reproduced with permission from ref. [32], copyright 2019 Nature Physics. Panel (l) is reproduced with permission from ref. [80], copyright 2019 Nature Nanotechnology. Panels (n, o) are reproduced with permission from ref. [35], copyright 2018 Nature Electronics.