A5062813777- 2D Materials and Applications
- Graphene research and applications
- Digital Media and Visual Art
- MXene and MAX Phase Materials
- Topological Materials and Phenomena
- Translation Studies and Practices
- Hepatitis B Virus Studies
- Animal Virus Infections Studies
- Multiferroics and related materials
- Advanced Condensed Matter Physics
- Hepatitis C virus research
- Electronic and Structural Properties of Oxides
- Perovskite Materials and Applications
- Ferroelectric and Piezoelectric Materials
- Magnetic and transport properties of perovskites and related materials
- Medical Research and Treatments
- Physics of Superconductivity and Magnetism
- Cytomegalovirus and herpesvirus research
- Chalcogenide Semiconductor Thin Films
- Advanced Thermoelectric Materials and Devices
- Spectroscopy and Chemometric Analyses
- Evaluation and Optimization Models
- Inorganic Chemistry and Materials
- Cultural and Sociopolitical Studies
- Literary Theory and Cultural Hermeneutics
Hebei University
2021-2025
Shaanxi Normal University
2024-2025
Beijing University of Technology
2023-2025
Computational Physics (United States)
2025
South China Agricultural University
2023-2025
University of Science and Technology Beijing
2024
Sun Yat-sen University
2023
Sun Yat-sen University Cancer Center
2023
Key Laboratory of Guangdong Province
2023
Numerical Method (China)
2021
Abstract. A plateau scale soil moisture and temperature observatory is established on the Tibetan Plateau for quantifying uncertainties in coarse resolution satellite model products of temperature. The (Tibet-Obs) consists three regional in-situ reference networks, including Naqu network a cold semiarid climate, Maqu humid climate Ngari arid climate. These networks provide representative coverage different land surface hydrometeorological conditions plateau. In this paper details Tibet-Obs...
We derive the effective single-band Hamiltonian in flat NiO$_2$ planes for nickelate compounds Nd$_{1-x}$Sr$_x$NiO$_2$. first implement first-principles calculation to study electronic structures of nickelates using Heyd-Scuseria-Ernzerhof hybrid density functional and a three-band Hubbard model Ni-O $pd\sigma$ bands Ni$^+$ $3d_{x^2-y^2}$ O$^{2-}$ $2p_{x/y}$ orbitals planes. To obtain one-band $t$-$t'$-$J$ Hamiltonian, we perform exact diagonalization Ni$_5$O$_{16}$ cluster map low-energy...
Since the theoretical and experimental demonstration of quasibonding (QB) interactions between van der Waals (vdW) layers two-dimensional (2D) materials, diverse effects applications interlayer interface QB in vdW homo- heterostructures have been reported. However, for (vdWHs) composed magnetic nonmagnetic 2D layers, principles interaction these systems their potential application remain to be elucidated. In current work, by density functional theory calculations combined with crystal...
The electronic-structure evolutions of few-layer black phosphorus (BP) under pressure shows a wealth phenomena, such as the nonmonotonic change direct gap at <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mi mathvariant="normal">Γ</a:mi></a:math> point, layer-number dependence, and distinct responses to normal hydrostatic pressures. A full unified understanding these rich phenomena remains lacking. Here, we provide from competition between quasibonding (QB) interactions chemical...
A class of septuple-atomic-layer two-dimensional (2D) materials, $\mathrm{Mo}{\mathrm{Si}}_{2}{\mathrm{N}}_{4}$ and $\mathrm{W}{\mathrm{Si}}_{2}{\mathrm{N}}_{4}$, was fabricated recently, the three constituent atoms may be replaced by other elements in Periodic Table, thus forming a large family. In current work, using density functional theory calculations, we systematically investigate 18 $M{\mathrm{Si}}_{2}{\mathrm{N}}_{4}$ (where $M$ denotes groups IV-B, V-B, VI-B transition metals)...
2D ferroelectric materials have attracted extensive research interest due to potential applications in nonvolatile memory, nanoelectronics and optoelectronics. However, the available are scarce most of them limited by uncontrollable preparation. Herein, a novel material AgCrS
Abstract Advancements and utilization of magnetic refrigeration technology hinge on the ongoing enhancement optimization material properties. Nevertheless, intricacy magnetocaloric effect (MCE) mechanism has emerged as a bottleneck, constraining progress refinement materials. In this study, classic system is chosen to investigate MCE across four different scales–macroscopic magnetism, micrometer‐scale domains, atomic moments, electronic structure. It simultaneously exhibits two inverse MCEs...
Quantum spin liquid (QSL) represents a new class of condensed matter states characterized by the long-range many-body entanglement topological orders. The most prominent feature elusive QSL state is existence fractionalized excitations. Subject to strong quantum fluctuations, spin-1/2 antiferromagnetic system on kagome lattice promising candidate for hosting ground state, but structurally ideal realization rare. Here, we report Raman scattering single crystalline Cu$_3$Zn(OH)$_6$FBr, and...
The rapid detection of chestnut quality is a critical aspect processing. However, traditional imaging methods pose challenge for chestnut-quality due to the absence visible epidermis symptoms. This study aims develop quick and efficient method using hyperspectral (HSI, 935-1720 nm) deep learning modeling qualitative quantitative identification quality. Firstly, we used principal component analysis (PCA) visualize quality, followed by application three pre-processing spectra. To compare...
Rotational Cherenkov-Excited Luminescence Scanned Tomography (RCELST) is an emerging optical imaging technology that visualizes the distribution of luminescent quantum yield within a treated subject. This involves collecting luminescence signals resulting from excitation probes by Cherenkov emissions induced rotational scanning MV X-rays. These are then mapped into sinogram for reconstructing neural networks. Vision Transformers (ViTs), effective deep learning algorithm known capturing...
Graphene, the atomic layer of carbon, is one most intensely studied objects since it was isolated for first time in 2004. However, its Dirac bands are made up pz orbitals, which creates certain limitations correlated physics. Here, we replace carbon with transition-metal atoms (M: Ti, Zr, and Hf) to form a corrugated honeycomb lattice. Moreover, both topside downside passivized by halogen (X: F, Cl, Br, I), making sure that all them thermodynamically stable. Due irregularly octahedral...
We determined that GeSb 4 Te 7 -based compounds exhibit site-occupational disorder of Ge/Sb cations and In-doping significantly lowers the thermal conductivity, enhances Seebeck coefficient, improves power factor pristine .
Emission governance of air pollutants from ships is a common challenge for the world's shipping industry. Under framework International Maritime Organization (IMO), Europe, North America, and other developed regions countries have established strict ship Control Areas (ECAs). With some largest ports in world, China suffers severe pollution ships, posing threat to quality public health coastal cities. To strengthen control supervision over pollutants, such as ship-emitted sulfur oxides (SOx)...
Momentum-matched type II van der Waals heterostructures (vdWHs) have been designed by assembling layered two-dimensional semiconductors (2DSs) with special band-structure combinations - that is, the valence band edge at Gamma point (the Brillouin-zone center) for one 2DS and conduction other [Ubrig et al., Nat. Mater. 19, 299 (2020)]. However, offset sizes, band-alignment types, whether momentum matched or not, all are affected interfacial effects between component 2DSs, such as...
Ferroelectricity can exist in elemental phases as a result of charge transfers between atoms occupying inequivalent Wyckoff positions. We investigate the emergence ferroelectricity two-dimensional materials with buckled honeycomb lattices. Various multibilayer structures hosting are designed by stacking engineering. Ferroelectric candidates formed group IV and V elements predicted theoretically. Ultrathin Bi films show layer-stacking-dependent physical properties ferroelectricity, topology,...
Recent studies have revealed that the interlayer interaction in two-dimensional (2D) layered materials is not simply of van der Waals character but could coexist with quasi-bonding character. Herein, we classify interactions into two main categories (I: homo-occupancy interaction; II: hetero-occupancy interaction) according to occupancy involved energy bands near Fermi level. We then investigate quasi-bonding-interaction-induced band structure evolution several representative 2D based on...
Abstract Magnetic skyrmions, whose shapes are ellipse due to the presence of anisotropic Dzyaloshinskii–Moriya interaction (DMI), have already been discovered in experiments recently. By using micromagnetic simulations, we discuss ground state and spin-wave modes a single elliptical skyrmion confined nanodot. It is found that stretched into horizontal ellipse, vertical or stripe shape under different strengths DMI. When skyrmions excited by in-plane ac magnetic fields, mode contains...
Polar metals based on binary and ternary compounds have been demonstrated in literature. Here, we propose a design principle for ferroelectric-like elemental polar relate it to real materials. The is that, be an metal, atoms should occupy at least two inequivalent Wyckoff positions crystal with space group, where inversion symmetry spontaneously broken. According this rule, the first class of potential distorted {\alpha}-La-like structure group P63mc which 2a (0, 0, z) 2b (1/3, 2/3, are...
Both n- and p-type ohmic contact to MoS 2 can be obtained via different CuS surfaces, due the weak metallicity large work function variation of interface quasi-bonding between .