A5027510970- Advanced Condensed Matter Physics
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Magnetic and transport properties of perovskites and related materials
- Superconducting Materials and Applications
- Physics of Superconductivity and Magnetism
- Advanced Photocatalysis Techniques
- Superconductivity in MgB2 and Alloys
- Magnetic properties of thin films
- Multiferroics and related materials
- Electronic and Structural Properties of Oxides
- Gas Sensing Nanomaterials and Sensors
- Particle accelerators and beam dynamics
- Catalytic Processes in Materials Science
- Ferroelectric and Piezoelectric Materials
- Topological Materials and Phenomena
- Metal-Organic Frameworks: Synthesis and Applications
- Crystal structures of chemical compounds
- Advanced Memory and Neural Computing
- Nuclear Materials and Properties
- Fusion materials and technologies
- Graphene research and applications
- Carbon dioxide utilization in catalysis
- Iron-based superconductors research
- Synthesis and biological activity
Tianjin University of Technology
2024
Jinhua Polytechnic
2024
Taiyuan University of Technology
2013-2024
Shanghai Institute of Technology
2023-2024
University of Cologne
2019-2023
Hangzhou Dianzi University
2022-2023
Materials Science & Engineering
2023
Chongqing Technology and Business University
2011-2022
Henan Normal University
2022
Max Planck Institute for Intelligent Systems
2022
The relative stability of single He defects in bcc and fcc metals is investigated using ab initio calculations based on density functional theory. results indicate that the tetrahedral position energetically more favorable for a interstitial than octahedral site metals, but varies, depending local environments. formation energies Fe Ni at positions with without spin polarization are investigated. It interest to find magnetism host atoms does not directly affect stabilities sites Ni.
A unified mechanism for the colossal electroresistance effects in Nb:SrTiO3-based heterojunctions is revealed.
Titanium dioxide thin films (30 nm) are deposited on platinized substrates by atomic layer deposition and locally studied conductive force microscopy showing repetitive bipolar resistive switching. Experiments using macroscopic copper top electrodes, which electroformed, switched, removed again from the TiO2–Pt stack, prove formation of local filaments with switching properties. The localized can be switched repetitively a resistance ratio 30. Our findings underline that Cu diffusion major...
Ferroelectric diodes are promising for fast, low-power nonvolatile memory, but a major roadblock to this technology is lack of reliability and reproducibility, the origins which remain poorly understood. Through experiment modeling, authors show that electroresistance ratio, resistive-switching polarity, high- low-resistance states all can be significantly affected by interfacial charge injection trapping in such device. This work carries important implications development reliable memory.
Unlocking the potential of topological order within many-body spin systems has long been a central pursuit in realm quantum materials. Despite extensive efforts, quest for versatile platform enabling site-selective manipulation, essential tuning and probing diverse phases, persisted. Here, we utilize on-surface synthesis to construct spin-1/2 alternating-exchange Heisenberg (AH) chains[1] with antiferromagnetic couplings $J_1$ $J_2$ by covalently linking Clar's goblets -- nanographenes each...
A metallic BiNPs/g-C<sub>3</sub>N<sub>4</sub>nanosheet photocatalyst is fabricated by a facile ultrasound-assisted electrostatic self-assembly method, and presents high-efficiency tetracycline degradation performance.
Abstract The combination of magnetic symmetries and electronic band topology provides a promising route for realizing topologically nontrivial quasiparticles, the manipulation structures may enable switching between topological phases, with potential achieving functional physical properties. Here, we report measurements electrical resistivity EuCd 2 As under pressure, which show an intriguing insulating dome at pressures p c1 ~ 1.0 GPa c2 2.0 GPa, situated two regimes metallic transport....
The formation/binding energetics and length scales associated with the interaction between He atoms grain boundaries in BCC α-Fe were explored. Ten different low Σ from ⟨100⟩ ⟨110⟩ symmetric tilt boundary systems used. In this work, we then calculated energies for 1–2 substitutional interstitial sites (HeV, He2V, HeInt, He2Int) at all potential within 15 Å of (52 826 simulations total). present results provide detailed information about structures examined. A number interesting new findings...
We investigated the structural and magnetic properties of bare SrRuO3 (SRO) ultrathin films SrRuO3/SrIrO3/SrZrO3 (SRO/SIO/SZO: RIZ) trilayer heterostructures between 10 80 K, by comparing macroscopic data using magneto-optical Kerr effect (MOKE) magneto-transport (anomalous Hall effect: AHE), with nanoscale fingerprints when applying noncontact scanning force microscopy (nc-SFM) (MFM). SRO RIZ were epitaxially grown at 650 °C onto vicinal SrTiO3 (100) single-crystalline substrates to a...
Haldane's seminal work established two fundamentally different types of excitation spectra for antiferromagnetic Heisenberg quantum spin chains: gapped excitations in integer-spin chains and gapless half-integer-spin chains. In finite-length half-integer chains, quantization, however, induces a gap the spectrum, with upper bound given by Lieb-Schulz-Mattis (LSM) theorem. Here, we investigate length-dependent spin-1/2 obtained covalently linking olympicenes--Olympic rings shaped nanographenes...
Molecular dynamics (MD) methods are utilized to study the formation of vacancy clusters created by displacement cascades in α-Fe containing different concentrations substitutional He atoms. Primary knock-on atom energies, Ep, from 500eV 20keV considered at a temperature 100K, and results compared with those performed pure α-Fe. There distinct differences number size within without helium It is found that many large can be formed cascade cores atoms, contrast few small observed The...
A novel and direct disulfonylation reaction of commercially available terminal alkynes under copper(I)/bromodifluoroacetate cocatalyst has been realized. This protocol provides a facile practical pathway to selectively access (E)-1,2-disulfonylethenes, in which features good functional group compatibility, easily starting materials, excellent stereoselectivity with yields.
We report electrical transport properties of ${\mathrm{EuZn}}_{2}{\mathrm{As}}_{2}$ under pressures up to 26 GPa. At ambient pressure, exhibits an insulating ground state and a $\ensuremath{\approx}200%$ negative magnetoresistance (MR) at $B=5$ T $T=2$ K. For $\ensuremath{\sim}3$ GPa, the system becomes more insulating, accompanied by dramatic enhancement MR $(B=5 \mathrm{T} \text{and} T=2 \mathrm{K})$ $\ensuremath{\approx}14\phantom{\rule{0.16em}{0ex}}000%$. Further increase pressure drives...