Fig. 1.
(Color online) Double-well landscape of the free energy F in a ferroelectric as a function of the electric polarization P. Insets: the two energetically degenerate state with opposite electric polarizations of α-In2Se3. The size-view ball-and-stick schematic illustrations are cited from Ref. [3].
Citation: |
Lun Dai. Room-temperature stable two-dimensional ferroelectric materials[J]. Journal of Semiconductors, 2019, 40(6): 060402. doi: 10.1088/1674-4926/40/6/060402
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L Dai, Room-temperature stable two-dimensional ferroelectric materials[J]. J. Semicond., 2019, 40(6): 060402. doi: 10.1088/1674-4926/40/6/060402.
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Room-temperature stable two-dimensional ferroelectric materials
DOI: 10.1088/1674-4926/40/6/060402
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References
[1] Birol T. Stable and switchable polarization in 2D. Nature, 2018, 560, 174 doi: 10.1038/d41586-018-05807-5[2] Hoffmann M, Fengler F P G, Herzig M, et al. Unveiling the double-well energy landscape in a ferroelectric layer. Nature, 2019, 565, 464 doi: 10.1038/s41586-018-0854-z[3] Ding W, Zhu J, Wang Z, et al. Prediction of intrinsic two-dimensional ferroelectrics in In2Se3 and other III2–VI3 van der Waals materials. Nat Commun, 2017, 8, 14596 doi: 10.1038/ncomms14596[4] Xiao J, Zhu H, Wang Y, et al. Intrinsic two-dimensional ferroelectricity with dipole locking. Phys Rev Lett, 2018, 120, 227601 doi: 10.1103/PhysRevLett.120.227601[5] Zhou Y, Wu D, Zhu Y, et al. Out-of-plane piezoelectricity and ferroelectricity in layered α-In2Se3 nanoflakes. Nano Lett, 2017, 17, 5508 doi: 10.1021/acs.nanolett.7b02198[6] Wan S, Li Y, Li W, et al. Room-temperature ferroelectricity and a switchable diode effect in two-dimensional α-In2Se3 thin layers. Nanoscale, 2018, 10, 14885 doi: 10.1039/C8NR04422H[7] Khan A I, Chatterjee K, Wang N, et al. Negative capacitance in a ferroelectric capacitor. Nat Mater, 2015, 14, 182 doi: 10.1038/nmat4148[8] Si M, Su C, Jiang C, et al. Steep-slope hysteresis-free negative capacitance MoS2 transistors. Nat Nano, 2018, 13, 24 doi: 10.1038/s41565-017-0010-1 -
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