A5100424540- Magnetic properties of thin films
- Geological and Geochemical Analysis
- Quantum and electron transport phenomena
- 2D Materials and Applications
- Geochemistry and Geologic Mapping
- Physics of Superconductivity and Magnetism
- earthquake and tectonic studies
- Seismic Imaging and Inversion Techniques
- Perovskite Materials and Applications
- Topological Materials and Phenomena
- Theoretical and Computational Physics
- Magnetic Properties and Synthesis of Ferrites
- Graphene research and applications
- Semiconductor materials and devices
- Seismic Waves and Analysis
- Silicon Nanostructures and Photoluminescence
- High-pressure geophysics and materials
- Multiferroics and related materials
- ZnO doping and properties
- Characterization and Applications of Magnetic Nanoparticles
- Nanowire Synthesis and Applications
- Electronic and Structural Properties of Oxides
- Quantum Computing Algorithms and Architecture
- Natural Language Processing Techniques
- Advanced Condensed Matter Physics
Nankai University
2016-2025
Chengdu University of Technology
2023-2024
Qingdao University of Science and Technology
2024
Qingdao University of Technology
2024
University of Hong Kong
2013-2023
Chinese University of Hong Kong
1999-2023
China Minmetals (China)
2023
China National Petroleum Corporation (China)
2023
Beijing Institute of Geology for Mineral Resources
2023
State Key Laboratory of Medicinal Chemical Biology
2022
We show that, because of the inevitable twist and lattice mismatch in heterobilayers transition metal dichalcogenides, interlayer excitons have sixfold degenerate light cones anomalously located at finite velocities on parabolic energy dispersion. The photon emissions each cone are elliptically polarized, with major axis locked to direction exciton velocity, helicity specified by valley indices electron hole. These finite-velocity allow unprecedented possibilities for optically injecting...
The interlayer couplings in commensurate and incommensurate bilayer structures of transition-metal dichalcogenides are investigated with perturbative treatment. coupling $\ifmmode\pm\else\textpm\fi{}\mathbf{K}$ valleys can be decomposed into a series hopping terms distinct phase factors. In H-type R-type bilayers, the interference between three main leads to sensitive dependence strength on translation that explain position dependent local band gap modulation heterobilayer moir\'e...
In this paper, we extend an attention-based neural machine translation (NMT) model by allowing it to access entire training set of parallel sentence pairs even after training. The proposed approach consists two stages. the first stage –retrieval stage–, off-the-shelf, black-box search engine is used retrieve a small subset from given source sentence. These are further filtered based on fuzzy matching score edit distance. second stage–translation novel model, called guided NMT (SEG-NMT),...
We explore the effect of charge carrier doping on ferroelectricity using density functional calculations and phenomenological modeling. By considering a prototypical ferroelectric material, ${\mathrm{BaTiO}}_{3}$, we demonstrate that displacements are sustained up to critical concentration 0.11 electron per unit cell volume. This result is consistent with experimental observations reveals phase conductivity can coexist. Our investigations show instability requires only short-range portion...
2D magnets and their engineered magnetic heterostructures are intriguing materials for both fundamental physics application prospects. On the basis of recently discovered intrinsic topological insulators (MnBi2 Te4 )(Bi2 Te3 )n , here, a new type magnet, in which layers separated by large number non-magnetic become magnetically independent, is proposed. This magnet named as single-layer regarding vanishing interlayer exchange coupling. Theoretical calculations magnetization measurements...
To explore whether the density-functional theory non-equilibrium Green's function formalism (DFT-NEGF) provides a rigorous framework for quantum transport, we carried out time-dependent density functional (TDDFT) calculations of transient current through two realistic molecular devices, carbon chain and benzenediol molecule inbetween aluminum electrodes. The TDDFT simulations steady state exactly reproduce results fully self-consistent DFT-NEGF even beyond linear response. In contrast,...
The first-principles computations show that arsenic-based covalent organic frameworks (As-COF) hold great promise as anode materials for K and Ca ion batteries.
Abstract Hybrid excitons, characterized by their strong oscillation strength and long lifetimes, hold great potential as information carriers in semiconductors. They offer promising applications exciton‐based devices circuits. MoSe 2 /WS heterostructures represent an ideal platform for studying hybrid but how to regulate the exciton lifetime has not yet been explored. In this study, layer hybridization is modulated applying electric fields parallel or antiparallel dipole moment, enabling us...
Broadband antireflection of silicon has been realized by combining black silicon, surface passivation and plasmons. Black fabricated Ag assisted chemical etching, was employed here to reduce the reflection incident light with wavelengths below 1100 nm. Due increased bandgap caused quantum confinement effect enhanced backward-scattering in our trapping diminished at above nanoparticles were deposited on obtain lowest reflectivity Compared traditionally textured multicrystalline average...
The Nanling Range in South China is endowed with abundant Jurassic W–Sn and Cu skarn deposits; however, the ore-forming age process of these deposits lack adequate comparative studies. Huangshaping deposit coincidently develops both mineralization systems, providing a good window to address issues. Multiple generations hydrothermal scheelite were identified at Huangshaping, including SchA-1, SchA-2, SchA-3 system, SchB-1, SchB-2, SchB-3 system. Scheelite two systems has similar textural...
Abstract The modulation of the electronic and magnetic properties 2D CrI 3 is investigated. substitutional doping I with Se impurities can introduce hole carriers strain, which strongly modulate physical . are magnetic, their direction opposite to that Cr atoms. very active contribute shallow impurity bands into bandgap. As a result, bandgap reduced, exchange interactions between atoms significantly enhanced. Curie temperature be increased up 250 K, while large out‐of‐plane anisotropic...
Stimulated generally by recent interest in the novel spin Hall effect, nonrelativistic quantum mechanical conserved currents, taken into account of spin-orbit coupling, are rigorously formulated based on symmetries system and Noether' theorem. The force as well torque associated with variance angular momentum obtained. Consequently, kinetic interpretation variances orbit currents implies a "electric dipole" moving spin. bearing properties current two-dimensional electron gas Rashba...
Monolayer metal monochalcogenides MXs (M=Ga,In; X=S,Se,Te) form a new class of two-dimensional semiconductors with indirect band gaps, and their alignment information is investigated via first principles calculations. The dependence gap, valence-band maximum, conduction minimum, charge transfer on the M or X element has been obtained can be understood from orbital analysis edges. Potential applications to design van der Waals heterostructures catalyse photo-splitting reaction water have discussed.
The key challenge of multi-domain translation lies in simultaneously encoding both the general knowledge shared across domains and particular distinctive to each domain a unified model. Previous work shows that standard neural machine (NMT) model, trained on mixed-domain data, generally captures knowledge, but misses domain-specific knowledge. In response this problem, we augment NMT model with additional transformation networks transform representations representations, which are...