Chinese Physics B, Volume. 29, Issue 9, (2020)
Flattening is flattering: The revolutionizing 2D electronic systems
Fig. 1. (a) Schematic 2D structure with
Fig. 2. (a) The QHE measured in a 6-nm-thick graphite flake at 0.25 K. (b) Schematic illustrations of electron trajectories under different conditions, (c) Energy gaps for the so-called 2.5D QHE as a function of thickness.[
Fig. 3. Schematic illustrations of (a) free 2D electrons, (b) interlayer-interacted 2D electrons, (c) correlated 2D electrons, and (d) twisted 2D electronic systems.
Fig. 4. (a), (b) FeSe monolayer epitaxially grown on SrTiO3(001) substrate, showing superconducting transition temperature above 100 K.[
Fig. 5. Magnetic hysteresis loops measured in a 5-layered MnBi2Te4, with Hall resistance
Fig. 6. (a) Schematic picture of a drag system with two separated 2D electrons. (b) Schematic picture of a GaAs/AlGaAs double quantum well sample.[
Fig. 7. (a) Schematic picture of a TBLG. (b) Illustration of the electronic band structure of a flat band (blue) induced by the magic angle moiré superlattice. (c) Schematic picture of the moiré superlattice with their stacking order marked with colors. A full filling of the mini flat band corresponds to 4 electrons in the moiré unit cell originated from the 4-fold degeneracy. (d) Summarization of state-of-the-art experimentally observed correlated quantum states in TBLG with the rotation close to the magic angle.
Fig. 8. (a) Schematic picture of a double gate programmable MoS2 transistor, which is capable to integrate photoswitching logic and memory in a single cell.[
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Baojuan Dong, Teng Yang, Zheng Han. Flattening is flattering: The revolutionizing 2D electronic systems[J]. Chinese Physics B, 2020, 29(9):
Received: Mar. 23, 2020
Accepted: --
Published Online: Apr. 29, 2021
The Author Email: Yang Teng (vitto.han@gmail.com)