A5100658287- Quantum and electron transport phenomena
- Magnetic properties of thin films
- Heusler alloys: electronic and magnetic properties
- Physics of Superconductivity and Magnetism
- MXene and MAX Phase Materials
- Topological Materials and Phenomena
- Gyrotron and Vacuum Electronics Research
- Lightning and Electromagnetic Phenomena
- Molecular Junctions and Nanostructures
- Atomic and Subatomic Physics Research
- Advanced Glycation End Products research
- Terahertz technology and applications
- Media Influence and Politics
- Complex Network Analysis Techniques
- Nonlinear Photonic Systems
- 2D Materials and Applications
- Policing Practices and Perceptions
- Medical Research and Treatments
- Spectroscopy and Quantum Chemical Studies
- Magneto-Optical Properties and Applications
- Mechanical and Optical Resonators
- Electronic and Structural Properties of Oxides
- Laser-Matter Interactions and Applications
- Quantum chaos and dynamical systems
- Magnetic confinement fusion research
Nanjing University
2016-2023
Shanghai Institute of Optics and Fine Mechanics
2023
Collaborative Innovation Center of Advanced Microstructures
2020-2022
National Laboratory of Solid State Microstructures
2020-2022
China Southern Power Grid (China)
2021
Sun Yat-sen University
2018
Nanjing General Hospital of Nanjing Military Command
2016
Beijing Jiaotong University
2009-2016
Shanghai Dianji University
2015
Nanjing Normal University
2005
Abstract Manipulating Gilbert damping is of critical importance in spintronic devices. Here, this work reports the anisotropy Heusler‐alloy Co 3− x Fe Al single crystalline thin films using inductive ferromagnetic resonance. A colossal ratio up to 1400%, nearly three times higher than highest value reported among known metallic ferromagnets, observed optimized sample 1.4 1.6 Al. The with strong fourfold symmetry attributed variation spin–orbit coupling, which further corroborated by...
To evaluate oxidative damage in leukocytes from patients with type 2 diabetes by examining 8-hydroxy-2'-deoxyguanosine (8-OHdG) levels.Patients and healthy controls were assessed for demographic, clinical biochemical characteristics. Levels of 8-OHdG extracted leukocyte DNA determined enzyme linked immunosorbent assay.Of 108 (56 microangiopathy, 52 without) 65 controls, levels higher versus (median ± interquartile range [IQR], 3.19 2.17 0.38 1.00 ng/ml), microangiopathy those without IQR,...
Abstract The rapid development of 2D magnetic materials has opened new possibilities in the field spintronics. CrTe 2 , a material with perpendicular anisotropy (PMA) and ferromagnetic transient temperature near room temperature, holds promise for various applications. However, underlying mechanism responsible its global magnetism remains unclear. This work focuses on investigating magneto‐transport properties ultra‐thin Field Effect Transistor (FET) under influence top gate biases....
Abstract This paper states that the induced charge should not be neglected in electric Aharonov-Bohm (A-B) effect. If is taken into account, interference pattern of moving will change with potential difference between two metal tubes. It means scalar itself can affect phase and true factor affecting energy system including charge.
The self-focusing phenomenon of partially coherent beams (PCBs) was simulated using the complex screen method combined with split-step Fourier to solve nonlinear Schrödinger equation. Considering propagation Gaussian Schell-model in a medium as an example, suppression effects intensity, distance, and spatial coherence on small-scale were demonstrated. Simulations overall this compared existing literature demonstrate validity method. This can numerically analyze degree PCBs advance study...
Gilbert damping is of crucial importance for spintronic devices due to its practical effect on the response time and energy consumption. Lower would enable more energy-efficient excitations and, thus, less current needed. The constant Co2FeAl film, a half-metal material important spintronics with 100% spin polarization at Fermi level, has shown an abnormal increase thin film limit inter-diffusion Al atoms. Here, we report that ultra-thin Co2FeAl1+x films nanometer thicknesses can be...
Abstract There are two interpretations of the Aharonov–Bohm (A–B) effect. One interpretation asserts that A–B effect demonstrates vector potential is a physical reality can result in phase shift moving charge quantum mechanics. The other results from interaction energy between electromagnetic field and external fields. This paper briefly reviews these analyzes their differences. In addition, new experimental scheme proposed to determine which correct.
The saturated magnetization (mtot) and the Gilbert damping constant (α) are two key factors that determine critical current density of reversal in spin-transfer-torque magnetic memory devices. Here, this study demonstrates efficient modulation these parameters by tunning composition Heusler Co3–xFexAl thin films, utilizing x-ray circular dichroism technique ferromagnetic resonance measurements. With increase Fe concentration, mtot shows a downward trend mainly resulting from decrease local...
Spin polarization and the Gilbert damping, as two key parameters of magnetic materials for spintronic applications, were suggested to be inversely proportional each other in a series Heusler alloys. Recently, large anisotropic damping was found Co2FeAl thin films, implying that spin may also anisotropic. Here, we report an isotropic with constant value 60% 20-nm film B2 structure, using spin- angle-resolved photoemission spectroscopy time-resolved magneto-optical Kerr effect. Furthermore,...
Abstract The structural and magnetic properties are important parameters for spintronic applications of Heusler compounds. Co 2 FeAl CoFe Al alloys considered as the representatives regular inverse structure, respectively. Here, we present a systematic study 3− x Fe ( = 1 ∼ 2) thin films grown on MgO (001) substrates. lattice properties, such coercivity, saturated moment four-fold anisotropy constant, display different change trends in Co-rich Fe-rich regions, which suggest that have...
In this paper, it is emphasized that the dynamical cause for A-B effect superimposed energy between magnetic field produced by moving charges and in solenoid, instead of existence vector potential A .If such a superposition fields can be eliminated, should not observed any more.To verify viewpoint, new experimental method using SQUID suggested paper.
Abstract Uncovering the physical mechanisms that govern ultrafast charge and spin dynamics is becoming indispensable both at fundamental level to develop future spin‐based electronics. Recently it has been shown femtosecond pulsed‐laser excitation of magnetic thin films produces intense spin‐polarized hot electrons, thus attracting a lot attention. While electrons are known play pivotal role in laser‐induced demagnetization, their effect on magnetization switching remains an open issue. This...
In this paper, a three-variable ASF method with equal-type half traversal is presented to predict the USA presidential parties from 2021 2041. Historical data 1853 2017 are applied as inputs in numerical experiments. Further handling situation of 2037, we do some calculations. Finally, that Democratic Party might win 2025, 2037 and 2041, while Republican 2021, 2029 2033.
This paper states that the induced charge should not be neglected in electric Aharonov-Bohm effect. If is taken into account, interference pattern of moving will change with potential difference between two metal tubes. It means scale itself can affect phase charge, and true factor affecting energy system including charge.
The back-action exerted by the moving electron on magnetic flux in A-B effect is analyzed. It emphasized that a reasonable interpretation should be consistent with uncertain principle. If reduced to zero, not observed, even through vector potential still exists space. To verify this interpretation, new experimental scheme proposed paper.
摘要 讨论了目前在超导体磁场穿透深度λ测量中常用的几种数据分析方法.着重指出对于那些只能测量λ随温度的变化值Δλ(T),而无法测量其绝对值的实验而言,一种合适的数据分析方法对于我们从实验中得出正确的结论尤其重要.而微分归一法将有效地克服目前此类实验中常用数据处理方法的不足,从而实现理论与实验间的无参量比较. 关键词: 超导体 磁场穿透深度 Abstract Keywords: 作者及机构信息 王瑞峰1, 赵士平2, 徐凤枝2, 陈赓华2, 杨乾声2 (1)北京师范大学物理系,北京100875中国科学院物理研究所,凝聚态物理中心,北京100080; (2)中国科学院物理研究所,凝聚态物理中心,北京100080 Authors and contacts Wang Rui-Feng1, Zhao Shi-Peng2, Xu Feng-Zhi2, Chen Gang-Hua2, Yang Han-Sheng2 参考文献 施引文献
The dynamical mechanism of A-B effect is discussed in detail. It found that due to the superposition magnetic field produced by moving charges with solenoid, rathor than existence vector potential A. If such a can be prevented, will disappear, even though A still exists space. To verify this conclusion, new experimental scheme suggested.
Wind energy is renewable and clean which has the most mature technology development conditions.Wind power generation provides basis for harmonious between man nature.The wind turbine working under natural environment, as a result, it inevitable to be influenced by disasters.With increase of capacity farm scale, harm lightning safe operation motor becoming more serious.Wind blade one vulnerable parts damage lightning.Domestic researches about this are rare.Based on large number foreign...
This paper studies the process of business birth-death from perspective complex networks to see whether it has statistical features network. Accordingly, this analyzes theoretical and empirical aspects by adding up price blue magic digital products, then datas Matlab, results show that network blues products is a economic network, but found degree distribution not power law distribution, after analysis we related stores' birth death, because in precess their business, for various reasons,...
The difference between lightning protection and distribution line is analyzed in the paper, which shows that induction main cause of line. influence heat generated by current power frequency on calculated. results show does not wire breaking, continuous breaking. simulation model overhead transmission network established induced overvoltage calculated simulation. Considering working conditions different grounding resistances, paper calculates compares limiting effect arrester ground circuit....
Abstract In this paper, the living environment of eural mountainous in eastern Zhejiang were investigated. 76 geological hazards areas selected as investigation objects. The investigate results showed that landslides, collapses and debris flows will effect residents living. There 43 instable disasters areas; 1 largest size, 41 medium size 34 small disasters. risk evaluation there 16 high 60 areas. research provide a basis for disaster prevention help to avoid