127 citations · 1.1k across the 29 of their papers we have counts for
29 papers
Atomic-scale imaging of CH3NH3PbI3 structure and its decomposition pathway
Shulin Chen, Changwei Wu, Bo Han +13
Understanding the atomic structure and structural instability of organic-inorganic hybrid perovskites is the key to appreciate their remarkable photoelectric properties and failure…
Manipulation of polar vortex chirality in oxide superlattices
Pan Chen, Congbing Tan, Zhexin Jiang +18
Topological polar vortices that are the electric analogues of magnetic objects, present great potential in applications of future nanoelectronics due to their nanometer size, anoma…
Microscopic kinetics pathway of salt crystallization in graphene nanocapillaries
Lifen Wang, Ji Chen, Stephen J. Cox +7
The fundamental understanding of crystallization, in terms of microscopic kinetic and thermodynamic details, remains a key challenge in the physical sciences. Here, by using in sit…
Zone-folded longnitude acoustic phonons driving self-trapped state emission in colloidal CdSe nanoplate superlattice
Xinyu Sui, Xiaoqing Gao, Xianxin Wu +11
Colloidal cadmium chalcogenide nanoplates are two-dimensional semiconductors that have shown great application prospect for light-emitting technologies. Self-trapped state (STS), a…
Four-dimensional Vibrational Spectroscopy for Nanoscale Mapping of Phonon Dispersion in BN Nanotubes
Ruishi Qi, Ning Li, Jinlong Du +8
Direct measurement of local phonon dispersion in individual nanostructures can greatly advance our understanding of their electrical, thermal, and mechanical properties. However, s…
Creating topological polar structure in a nonpolar matter
Adeel Y. Abid, Yuanwei Sun, Xu Hou +15
Nontrivial topological structures offer rich playground in condensed matter physics including fluid dynamics, superconductivity, and ferromagnetism, and they promise alternative de…
Transmission electron microscopy of organic-inorganic hybrid perovskites: myths and truths
Shulin Chen, Ying Zhang, Jinjin Zhao +8
Organic-inorganic hybrid perovskites (OIHPs) have attracted extensive research interest as a promising candidate for efficient and inexpensive solar cells. Transmission electron mi…
Interlayer Decoupling in 30° Twisted Bilayer Graphene Quasicrystal
Bing Deng, Binbin Wang, Ning Li +8
Stacking order has strong influence on the coupling between the two layers of twisted bilayer graphene (BLG), which in turn determines its physical properties. Here, we report the…
Broad-Spectral-Range Sustainability and Controllable Excitation of Hyperbolic Phonon Polaritons in -MoO3
Weikang Dong, Ruishi Qi, Tiansheng Liu +8
Hyperbolic phonon polaritons (HPhPs) in orthorhombic-phase molybdenum trioxide (-MoO3) show in-plane hyperbolicity, great wavelength compression and ultra-long lifetime, therefo…
Correlating the Electronic Structures of Metallic/Semiconductor MoTe2 Interface to its Atomic Structures
Bo Han, Chen Yang, Xiaolong Xu +8
Contact interface properties are important in determining the performances of devices based on atomically thin two-dimensional (2D) materials, especially those with short channels.…
Atomic-scale observations of electrical and mechanical manipulation of topological polar flux-closure
Xiaomei Li, Congbing Tan, Peng Gao +12
The ability to controllably manipulate the complex topological polar configurations, such as polar flux-closure via external stimuli, enables many applications in electromechanical…
Thickness-dependent in-plane polarization and structural phase transition in van der Waals Ferroelectric CuInP2S6
Jianming Deng, Yanyu Liu, Mingqiang Li +7
Van der Waals (vdW) layered materials have rather weaker interlayer bonding than the intra-layer bonding, therefore the exfoliation along the stacking direction enables the achieve…
Chiral spin-wave velocities induced by all-garnet interfacial Dzyaloshinskii-Moriya interaction in ultrathin yttrium iron garnet films
Hanchen Wang, Jilei Chen, Tao Liu +14
Spin waves can probe the Dzyaloshinskii-Moriya interaction (DMI) which gives rise to topological spin textures, such as skyrmions. However, the DMI has not yet been reported in ytt…
Atomic Imaging of Mechanically Induced Topological Transition of Ferroelectric Vortices
Pan Chen, Xiangli Zhong, Jacob A. Zorn +14
Ferroelectric vortices formed through complex lattice-charge interactions have great potential in applications for future nanoelectronics such as memories. For practical applicatio…
Nanoscale Probing of Localized Surface Phonon Polaritons in SiC Nanorods with Swift Electrons
Yuehui Li, Ruishi Qi, Ruochen Shi +4
Surface phonon polaritons hold much potential for subwavelength control and manipulation of light at the infrared to terahertz wavelengths. Here, aided by monochromatic scanning tr…
Scaling-up atomically thin coplanar semiconductor-metal circuitry via phase engineered chemical assembly
Xiaolong Xu, Shuai Liu, Bo Han +11
Two-dimensional (2D) layered semiconductors, with their ultimate atomic thickness, have shown promise to scale down transistors for modern integrated circuitry. However, the electr…
Solution Processed Large-scale Multiferroic Complex Oxide Epitaxy with Magnetically Switched Polarization
Cong Liu, Feng An, Paria S. M. Gharavi +21
Complex oxides with tunable structures have many fascinating properties, though high-quality complex oxide epitaxy with precisely controlled composition is still out of reach. Here…
Layered semiconductor EuTe 4 with charge density wave order in square tellurium sheets
D. Wu, Q. M. Liu, S. L. Chen +8
We report a novel quasi-two dimensional compound of EuTe4 hosting charge density waves (CDW) instability. The compound has a crystallographic structure in a orthorhombic space grou…
Artificially Engineered Nanostrain in Iron Chalcogenide Superconductor Thin Film for Enhancing Supercurrent
Sehun Seo, Heesung Noh, Ning Li +13
Although nanoscale deformation, such as nanostrain in iron chalcogenide (FeSexTe1-x, FST) thin films, has attracted attention owing to the enhancement of general superconducting pr…
Towards the growth of single-crystal boron nitride monolayer on Cu
Li Wang, Xiaozhi Xu, Leining Zhang +21
Atom-layered hexagonal boron nitride (hBN), with excellent stability, flat surface and large bandgap, has been reported to be the best 2D insulator to open up the great possibiliti…
Atomic Structure of Polar Surface in SrTiO3
Adeel Y Abid, Ning Li, Ayaz Arif +1
Rearrangement of atoms due to broken translational symmetries at the surface of SrTiO is scarcely debatable in the present day scenario. Actual concern demands to unveil the tr…
VS: a Kondo lattice based on intercalation of van der Waals layered transition metal dichalcogenide
Jingjing Niu, Zhilin Li, Sixian Yang +10
Since the discovery of graphene, a tremendous amount of two dimensional (2D) materials have surfaced. Their electronic properties can usually be well understood without considering…
Probing lattice vibration at surface and interface of SiO/Si with nanometer resolution
Yuehui Li, Mei Wu, Ning Li +6
Recent advances in monochromatic aberration corrected electron microscopy make it possible to detect the lattice vibration with both high-energy resolution and high spatial resolut…
A ferroelectric problem beyond the conventional scaling law
Qi-Jun Ye, Zhi-Yuan Liu, Yexin Feng +2
Ferroelectric (FE) size effects against the scaling law were reported recently in ultrathin group-IV monochalcogenides, and extrinsic effects (e.g. defects and lattice strains) wer…