A5100615721- Topological Materials and Phenomena
- Tensor decomposition and applications
- Graphene research and applications
- Advanced Photocatalysis Techniques
- 2D Materials and Applications
- Advanced Condensed Matter Physics
- Matrix Theory and Algorithms
- Ammonia Synthesis and Nitrogen Reduction
- Ga2O3 and related materials
- ZnO doping and properties
- Advanced Neuroimaging Techniques and Applications
- Metal-Organic Frameworks: Synthesis and Applications
- Catalytic Processes in Materials Science
- Covalent Organic Framework Applications
- Electronic and Structural Properties of Oxides
- Quantum, superfluid, helium dynamics
- Layered Double Hydroxides Synthesis and Applications
- High-pressure geophysics and materials
- Advanced Fiber Laser Technologies
- Polynomial and algebraic computation
- Hydrogen Storage and Materials
- Ferroelectric and Negative Capacitance Devices
- Electrocatalysts for Energy Conversion
- Distributed and Parallel Computing Systems
- Elasticity and Material Modeling
University of Pennsylvania
2022-2024
Taiyuan University of Technology
2022-2024
Murray State University
2002-2024
Chinese Academy of Sciences
2019-2023
Institute of Physics
2019-2023
Ningbo Institute of Industrial Technology
2021-2023
National Laboratory for Superconductivity
2019-2022
University of Chinese Academy of Sciences
2019-2022
Shanghai Zhangjiang Laboratory
2022
Chengdu University of Technology
2022
Abstract Bismuth (Bi) is a topological crystalline insulator (TCI), which has gapless surface states (TSSs) protected by specific symmetry that strongly depends on the facet. Bi also promising electrochemical CO 2 reduction reaction (ECO RR) electrocatalyst for formate production. In this study, single‐crystalline rhombic dodecahedrons (RDs) exposed with (104) and (110) facets are developed. The RDs demonstrate very low overpotential high selectivity production (Faradic efficiency >92.2%)...
We define and study (nonnegative) primitive tensors. Many important characterizations of matrices can be extended to nonnegative The NQZ method for calculating the largest eigenvalue an irreducible tensor is proposed in [8] extension Collatz’s method. In particular, convergence finding a tensor, by Ng, Qi, Zhou, proved under assumption. This fact then used find any tensor.
SUMMARY This is a survey paper on the recent development of spectral theory nonnegative tensors and its applications. After brief review basic definitions tensors, H ‐eigenvalue problem Z for are studied separately. To whole Perron–Frobenius matrices completely extended, while to problem, there many distinctions carefully in details. Numerical methods also discussed. Three kinds applications studied: higher order Markov chains, hypergraphs, quantum entanglement. Copyright © 2013 John Wiley...
Topological materials is one of the hottest topics in condensed matter physics because its exotic properties such as robust metallic boundary states, Fermi arcs, and spin‐momentum‐locking helicity. The topologically protected conducting states spanning whole bandgap are expected to serve wide‐range‐energy transition facilitating catalytic reactions. Recently, some topological have been found be high‐performance catalysts, which might open an emerging research field. Herein, overview given...
In high harmonic generation from certain solids, a vector that measures the shift of photoexcited electron and hole plays prominent role in excitation recollision mechanism for electrons strong laser fields.
The discovery of magnetic Weyl semimetal (magnetic WSM) in ${\mathrm{Co}}_{3}{\mathrm{Sn}}_{2}{\mathrm{S}}_{2}$ has triggered great interest for abundant fascinating phenomena induced by band topology conspiring with the magnetism. Understanding how magnetization affects structure can give us a deeper comprehension WSMs and guide innovation applications. Here, we systematically study temperature-dependent optical spectra ferromagnetic WSM experimentally simulated first-principles...
Incorporating emerging ultrawide bandgap semiconductors with a metal-semiconductor-metal (MSM) architecture is highly desired for deep-ultraviolet (DUV) photodetection. However, synthesis-induced defects in complicate the rational design of MSM DUV photodetectors due to their dual role as carrier donors and trap centers, leading commonly observed trade-off between responsivity response time. Here, we demonstrate simultaneous improvement these two parameters {\epsilon}-Ga2O3 by establishing...
Recently, many topological materials have been discovered as promising electrocatalysts in chemical conversion processes and energy storage. However, it remains unclear how the electronic states specifically modulate catalytic reaction. Here, two-dimensional metal phthalocyanine-based covalent organic framework (MPc-COF) is studied by ab initio thermodynamic calculations to clearly reveal promotional effect on electrochemical hydrogen evolution reaction (HER) induced gapless bands (TGBs). We...
Gallium oxide (Ga<sub>2</sub>O<sub>3</sub>) is an emerging semiconductor for advanced optoelectronic applications owing to its suitable bandgap and advantageous electronic characteristics. While amorphous Ga<sub>2</sub>O<sub>3</sub> highly desired low-cost large-scale device application, it suffers from high dark current slow response speed practical ultraviolet photodetection. Here we integrate a polar aluminum nitride (AlN) template with fabricate fast-response metal (MSM) photodetector....
Abstract This work fabricates deep-ultraviolet (DUV) photodetectors (PDs) with a metal-semiconductor-metal structure based on radio-frequency sputtered amorphous Ga 2 O 3 films at room temperature. The -based PD exhibits low dark current of 1.41 × 10 −11 A, responsivity 1.77 A W −1 and fast rise response time 114 ms. series annealing treatments different atmospheres have been found effective to reduce the oxygen vacancy concentration, exhibiting trade-off effect between time. These results...
Precision synthesis of ultrawide-bandgap semiconductors with a desired crystal phase is broad interest for developing advanced electronic devices. However, it highly challenging gallium oxide (Ga2O3), which known versatile transition. Here, we report non-equilibrium epitaxy strategy to confine the crystallization pathways Ga2O3 toward two distinct metastable polymorphs during pulsed laser deposition (PLD) growth. This achieved by synergic control substrate orientation and intentional tin...
The inability to process many covalent organic frameworks (COFs) as thin films plagues their widespread utilization. Herein, a vapor-phase pathway for the bottom-up synthesis of class porphyrin-based COFs is presented. This approach allows integrating electrocatalysts made metal-ion-containing into electrodes' architectures in single-step and deposition. By precisely controlling metal sites at atomic level, remarkable electrocatalytic performance achieved, resulting unprecedentedly high mass...
Abstract The magnetic type-II Weyl semimetal (MWSM) Co 3 Sn 2 S has recently been found to host a variety of remarkable phenomena including surface Fermi-arcs, giant anomalous Hall effect, and negative flat band magnetism. However, the dynamic properties remain relatively unexplored. Here, we investigate ultrafast spin dynamics crystal using time-resolved magneto-optical Kerr effect reflectivity spectroscopies. We observe transient magnetization behavior, consisting spin-flipping dominated...
The kagome magnet ${\mathrm{TbMn}}_{6}{\mathrm{Sn}}_{6}$ is a new type of topological material that known to support exotic quantum magnetic states. Experimental work has identified hosts Dirac electronic states could lead and Chern phases, but the optical response fermions its properties remain be explored. Here, we perform an spectroscopy measurement combined with first-principles calculations on single-crystal sample investigate associated phenomena. exhibits frequency-independent...
This paper describes a new class of topological crystalline insulators with ${C}_{2}$ rotation anomaly. gives rise to two surface Dirac cones, which the authors uncover based on nested Wilson loop technique