Related references
Note: Only part of the references are listed.
Review
Chemistry, Multidisciplinary
Bingzhu Zheng et al.
Summary: Rare-earth doping is a promising method to enhance the properties of materials, such as optical, electronic, catalytic, and magnetic properties. It can improve energy harvesting and conversion efficiency. Understanding the critical role of rare-earth doping is essential for the development of functional nanomaterials and their applications in various fields.
Article
Nanoscience & Nanotechnology
Xirui Wang et al.
Summary: By stacking non-equilibrium configurations of van der Waals materials, we have successfully fabricated nanometer-thick 2D ferroelectric semiconductors. We discovered electrically switchable rhombohedral-stacking configurations by parallel stacking two identical monolayer transition metal dichalcogenides (TMDs), with out-of-plane polarization that can be flipped by in-plane sliding motion. The ferroelectric domains were visualized using piezoelectric force microscopy.
NATURE NANOTECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Astrid Weston et al.
Summary: Marginal twisting of 2D semiconductor crystals enables the emergence of room temperature interfacial ferroelectricity. The ferroelectricity can be controlled and moved by applying an electric field, opening up unlimited possibilities for the design of new metamaterials.
NATURE NANOTECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Lukas Rogee et al.
Summary: We have successfully demonstrated unexpected out-of-plane ferroelectric and piezoelectric properties in MoS2/WS2 heterobilayers, which can be utilized in ultrathin ferro- and piezoelectronic devices.
Article
Chemistry, Physical
Bo Xu et al.
Summary: Using first-principles calculations, researchers have discovered a sliding-induced ferroelectric-to-antiferroelectric behavior in bilayer group-IV monochalcogenides. This phenomenon has great potential for energy harvesting applications.
NPJ COMPUTATIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Le-Ping Miao et al.
Summary: Sliding ferroelectricity is a polarity observed in two-dimensional materials. We report the direct observation of sliding ferroelectricity in a single-crystal coordination polymer with a large bandgap. This finding provides important insights into low-dimensional ferroelectrics and their control.
Article
Chemistry, Physical
Yu Yun et al.
Summary: Ferroelectricity can be achieved in epitaxial HfO2 films with high structural order, indicating that it is an intrinsic property of HfO2-based materials. This discovery has significant implications for optimizing the performance of HfO2-based materials in device applications.
Article
Chemistry, Multidisciplinary
Jiawei Huang et al.
Summary: We propose a new class of quantum materials, type-II two-dimensional ferroelectric topological insulators (2DFETIs), which allow non-volatility and an on-off switch of quantum spin Hall states. A general strategy is developed to realize type-II 2DFETIs using only topologically trivial 2D ferroelectrics. The built-in electric field arising from the out-of-plane polarization across the bilayer heterostrucuture of 2D ferroelectrics enables robust control of the band gap size and band inversion strength, which can be utilized to manipulate the topological phase transitions on-demand. Using first-principles calculations with hybrid density functionals, we demonstrate that a series of bilayer heterostructures are type-II 2DFETIs characterized with a direct coupling between the band topology and polarization state. We propose a few 2DFETI-based quantum electronics, including domain-wall quantum circuits and topological memristors.
MATERIALS HORIZONS
(2022)
Article
Chemistry, Physical
Xianghan Xu et al.
Summary: The study demonstrates that stabilization of the desired phase in bulk hafnium dioxide is achieved through yttrium doping and rapid cooling, greatly expanding the application of hafnium dioxide's ferroelectric properties.
Article
Chemistry, Physical
Trond Andersen et al.
Summary: Recent advancements have allowed for direct imaging of stacking domains in van der Waals heterostructures, enabling a better understanding of the correlation between moire structures and electronic/optical properties. Through this technique, researchers were able to investigate reconstructed moire patterns in twisted WSe2/WSe2 bilayers and identify the emergence of distinct exciton species in photoluminescence measurements, with the ability to tune these states individually through electrostatic gating.
Review
Chemistry, Multidisciplinary
Lu Qi et al.
Summary: 2D ferroelectrics are predicted to be important functional materials in the upcoming nano era, with unique properties such as photovoltaic, piezoelectric, and pyroelectric effects, as well as valley and spin polarization. Research focuses on exploring theories, experiments, and applications for these materials.
ADVANCED MATERIALS
(2021)
Article
Multidisciplinary Sciences
Menghao Wu et al.
Summary: Sliding ferroelectricity has been recently discovered in two-dimensional van der Waals stacked layers, where the vertical electric polarization can be switched by interlayer sliding driven by an external electric field. This discovery expands the range of 2D ferroelectric materials and opens up possibilities for high-speed data storage and other applications.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Chemistry, Multidisciplinary
Menghao Wu
Summary: Recent breakthroughs in two-dimensional van der Waals ferroelectrics have shown great promise in the field of nanoelectronics, offering advantages such as high-density memory and excellent semiconductor performance. However, commercialization of these materials faces obstacles like insulating and interfacial issues, although the superior properties of many 2D ferroelectrics may overcome these challenges and play a crucial role in nanoelectronics.
Article
Physics, Multidisciplinary
Bin Zhang et al.
Summary: In this study, super deformability and thermoelectricity of gamma-InSe single crystals grown by a modified Bridgeman method were reported, and the crystal structure was systematically investigated using transmission electron microscopy methods. The predominant phase of gamma-InSe with dense stacking faults and local multiphases was directly demonstrated at the atomic scale. Additionally, the study found that gamma-InSe crystals possess high intrinsic super deformative ability and graphite-like features, and preliminary research on their thermoelectric properties was conducted.
Article
Multidisciplinary Sciences
Kenji Yasuda et al.
Summary: In this research, ferroelectricity is achieved in two-dimensional boron nitride through van der Waals assembly, demonstrating the phenomenon that polarization can be changed by twisting the angle. This discovery paves the way for potential applications in ultrathin nonvolatile memory, while maintaining the high mobility of graphene.
Article
Multidisciplinary Sciences
M. Vizner Stern et al.
Summary: In this study, a stable ferroelectric order was discovered at the interface between two naturally grown flakes of hexagonal boron nitride, where the flakes were stacked in a non-centrosymmetric parallel orientation. Reversible polarization switching coupled with lateral sliding was achieved by scanning a biased tip above the surface.
Article
Materials Science, Multidisciplinary
A. N. Rudenko et al.
Summary: By studying the structure and mobility of dislocations in InSe, it is found that the plasticity of InSe is attributed to the peculiarities of the generalized stacking fault relief for the interlayer dislocation slips, such as the existence of stacking faults with very low energy and low energy barriers. These results provide a consistent microscopic explanation for the exceptional plasticity of InSe recently observed.
Article
Chemistry, Physical
Maciej R. Molas et al.
Summary: In this study, the N-dependence of intralayer vibrations and interlayer modes in layers of InSe and GaSe encapsulated in hexagonal boron nitride was investigated using Raman spectroscopy. The peak positions evolution as a function of N can be described by a linear chain model, which is consistent with first principles calculations.
FARADAY DISCUSSIONS
(2021)
Article
Nanoscience & Nanotechnology
Jiho Sung et al.
NATURE NANOTECHNOLOGY
(2020)
Article
Multidisciplinary Sciences
Tian-Ran Wei et al.
Article
Multidisciplinary Sciences
Zhiren Zheng et al.
Article
Chemistry, Multidisciplinary
David G. Hopkinson et al.
Article
Chemistry, Multidisciplinary
Mingjin Dai et al.
Article
Microscopy
Q. Zhang et al.
Article
Chemistry, Multidisciplinary
Liping Xu et al.
Article
Chemistry, Multidisciplinary
Fei Xue et al.
Article
Multidisciplinary Sciences
Zaiyao Fei et al.
Article
Nanoscience & Nanotechnology
Denis A. Bandurin et al.
NATURE NANOTECHNOLOGY
(2017)
Article
Multidisciplinary Sciences
Wenjun Ding et al.
NATURE COMMUNICATIONS
(2017)
Article
Chemistry, Multidisciplinary
Lei Li et al.
Article
Physics, Applied
Bora Kim et al.
APPLIED PHYSICS LETTERS
(2016)
Article
Physics, Multidisciplinary
Ruixiang Fei et al.
PHYSICAL REVIEW LETTERS
(2016)
Article
Multidisciplinary Sciences
Wen-Yi Tong et al.
NATURE COMMUNICATIONS
(2016)
Article
Multidisciplinary Sciences
Fucai Liu et al.
NATURE COMMUNICATIONS
(2016)
Article
Physics, Multidisciplinary
Sharmila N. Shirodkar et al.
PHYSICAL REVIEW LETTERS
(2014)
Article
Multidisciplinary Sciences
Eric Bousquet et al.