A5102996896- Electronic and Structural Properties of Oxides
- Iron-based superconductors research
- Magnetic and transport properties of perovskites and related materials
- Graphene research and applications
- Topological Materials and Phenomena
- Physics of Superconductivity and Magnetism
- 2D Materials and Applications
- Advanced Condensed Matter Physics
- Groundwater and Isotope Geochemistry
- Superconductivity in MgB2 and Alloys
- Semiconductor materials and devices
- Surface and Thin Film Phenomena
- Organic and Molecular Conductors Research
- Spine and Intervertebral Disc Pathology
- Perovskite Materials and Applications
- Heavy metals in environment
- Advanced Chemical Physics Studies
- Mechanical and Optical Resonators
- Semiconductor Quantum Structures and Devices
- Atmospheric and Environmental Gas Dynamics
- Chalcogenide Semiconductor Thin Films
- Environmental remediation with nanomaterials
- Atmospheric Ozone and Climate
- Geology and Paleoclimatology Research
- S100 Proteins and Annexins
Chinese Academy of Sciences
2016-2025
Qilu Hospital of Shandong University
2023-2025
First Affiliated Hospital of Anhui Medical University
2024-2025
Anhui Medical University
2024-2025
Tianjin University of Technology
2025
University of Chinese Academy of Sciences
2017-2025
Shandong University
2025
Suzhou Municipal Hospital
2025
Nanjing Medical University
2025
Czech Academy of Sciences, Institute of Physics
2019-2025
Monolayer molybdenum disulfide (MoS2) has attracted great interest due to its potential applications in electronics and optoelectronics. Ideally, single-crystal growth over a large area is necessary preserve intrinsic figure of merit but very challenging achieve. Here, we report an oxygen-assisted chemical vapor deposition method for monolayer MoS2. We found that the MoS2 domains can be greatly improved by introducing small amount oxygen into environment. Triangular achieved with sizes up...
Significance Charge density waves (CDWs) are observed in many solids, especially low-dimensional systems. Their existence was first predicted the 1930s by Rudolf Peierls, who prophesied that CDWs would exist an ideal one-dimensional (1D) chain of atoms, lowering energy system and driving a reconstruction lattice. In 1959, Walter Kohn pointed out this nesting results what is now known as “Kohn anomaly,” simultaneous softening coherent lattice vibrations, i.e., phonon softening. This simple...
The dream of room temperature superconductors has inspired intense research effort to find routes for enhancing the superconducting transition (Tc). Therefore, single-layer FeSe on a SrTiO3 substrate, with its extraordinarily high Tc amongst all interfacial and iron based superconductors, is particularly interesting, but mechanism underlying remained mysterious. Here we show through isotope effects that electrons in couple oxygen phonons superconductivity enhanced linearly coupling strength...
Abstract Intervertebral disc degeneration (IVDD) is one of the most prevalent spinal degenerative disorders and imposes places heavy medical economic burdens on individuals society. Mechanical overloading applied to intervertebral (IVD) has been widely recognized as an important cause IVDD. overloading-induced chondrocyte ferroptosis was reported, but potential association between mechanical remains be illustrated in nucleus pulposus (NP) cells. In this study, we discovered that excessive...
In this letter we report measurements of the coupling between Dirac fermion quasiparticles (DFQs) and phonons on (001) surface strong topological insulator Bi2Se3. While most contemporary investigations have involved examining temperature dependence DFQ self-energy via angle-resolved photoemission spectroscopy (ARPES) measurements, employ inelastic helium atom scattering to explore, for first time, from phonon perspective. Using a Hilbert transform, are able obtain imaginary part associated...
Charge density wave (CDW) is an important concept in condensed matter physics, germane to a number of physical phenomena. But the origin CDW still under debate, partly because and properties are highly material-dependent. The has been applied many materials without clear definition fundamental nature CDW. As result, misconceptions about can be seen literature. In this review, we will try describe explain possible existing associated with CDWs.
The significant role of interfacial coupling in the enhancement superconductivity FeSe films on ${\mathrm{SrTiO}}_{3}$ has been widely recognized, but explicit origin this is yet to be identified. Here, by surface phonon measurements using high-resolution electron energy loss spectroscopy, we found electric field generated Fuchs-Kliewer (F-K) modes can penetrate into and strongly interact with electrons therein. mode-specific electron-phonon constant for $\ensuremath{\sim}92$ meV F-K...
Phonons, as the most fundamental emergent bosons in condensed matter systems, play an essential role thermal, mechanical, and electronic properties of crystalline materials. Recently, concept topology has been introduced to phonon nontrivial topological states also exist phonons due constraint by crystal symmetry space group. Although classification various enriched theoretically, experimental studies were limited several three-dimensional (3D) single crystals with inelastic x-ray or neutron...
We report the first measurements of phonon dispersion curves on (001) surface strong three-dimensional topological insulator Bi2Se3. The were carried out with aid coherent helium beam scattering techniques. results reveal a prominent signature exotic metallic Dirac fermion quasiparticles, including Kohn anomaly. is manifest in low energy isotropic convex dispersive branch frequency maximum 1.8 THz and having V-shaped minimum at approximately 2kF that defines Theoretical analysis attributes...
The observation of substantially enhanced superconductivity single-layer FeSe films on ${\mathrm{SrTiO}}_{3}$ has stimulated intensive research interest. At present, conclusive experimental data the corresponding electron-boson interaction is still missing. Here we use inelastic electron scattering spectroscopy and angle resolved photoemission to show that electrons in these systems are dressed by strongly polarized lattice distortions ${\mathrm{SrTiO}}_{3}$, indispensable nonadiabatic...
Abstract In single unit-cell FeSe grown on SrTiO 3 , the superconductivity transition temperature features a significant enhancement. Local phonon modes at interface associated with electron-phonon coupling may play an important role in interface-induced However, such have eluded direct experimental observations. The complicated atomic structure of brings challenges to obtain accurate structure-phonon relation knowledge. Here, we achieve characterizations and FeSe/SrTiO atomically resolved...
Plasmons, the collective excitations of electrons in bulk or at surface, play an important role properties materials, and have generated field ``plasmonics.'' We report observation a highly unusual acoustic plasmon mode on surface three-dimensional topological insulator (TI) ${\mathrm{Bi}}_{2}{\mathrm{Se}}_{3}$, using momentum resolved inelastic electron scattering. In sharp contrast to ordinary modes, this exhibits almost linear dispersion into second Brillouin zone remains prominent with...
Abstract Enormous enhancement of superconducting pairing temperature ( T g ) to 65 K in FeSe/SrTiO 3 has made it a spotlight. Despite the effort interfacial engineering, FeSe interfaced with TiO x remains unique case hosting high , hindering decisive understanding on general mechanism and ways further improving . Here we constructed new high- interface, single-layer FeO -terminated LaFeO Large gap diamagnetic response evidence that can emerge near 80 K, highest amongst all-known...
Abstract Phonon splitting of the longitudinal and transverse optical modes (LO-TO splitting), a ubiquitous phenomenon in three-dimensional polar materials, will break down two-dimensional (2D) systems. Theoretical predictions propose that LO phonon 2D monolayers becomes degenerate with TO phonon, displaying distinctive “V-shaped” nonanalytic behavior near center Brillouin zone. However, full experimental verification these behaviors has been lacking. Here, using monolayer hexagonal boron...
Kesterite Cu2ZnSn(S,Se)4 (CZTSSe) has emerged as a promising photovoltaic material due to its low cost and high stability. The CZTSSe film for high-performance solar cells can be obtained by annealing the deposited CZTS precursor films with selenium (a process known selenization). design of selenization significantly affects quality absorber layer. In this work, we systematically investigate impact heating rate on kinetics microstructural characteristics using two-step method. results...
In condensed matter physics, various mechanisms give rise to distinct insulating phases. The competition and interplay between these phases remain elusive, even for the seemingly most distinguishable band Mott insulators. multilayer systems, such is mediated by interlayer hopping, which competes with Coulomb repulsion determine nature of layered compound 1T-TaS_{2} provides an ideal platform investigating this phenomenon, as it naturally hosts coexisting states. However, distinguishing...
ABSTRACT Osteoporosis is a disease of bone metabolism caused by an imbalance between osteoclast‐mediated destruction and osteoblast‐mediated formation. Tumour necrosis factor α (TNFα) has been reported to promote osteoclast generation inhibit osteoblast generation. Progranulin (PGRN), which strong anti‐inflammatory effect, interacts with tumour receptor (TNFR). Serum tissues from patients or without osteoporosis were collected analyse the relationship PGRN content metabolic markers. The role...
Abstract Topological physics has evolved from its initial focus on fermionic systems to the exploration of bosonic systems, particularly phononic excitations in crystalline materials. Two-dimensional (2D) topological phonons emerge as promising candidates for future technological applications. Currently, experimental verification 2D remained exclusively limited graphene, a constraint that hinders their applications devices. Here, we report evidence monolayer hexagonal boron nitride using...