A5045003621- Iron-based superconductors research
- Topological Materials and Phenomena
- Rare-earth and actinide compounds
- Graphene research and applications
- 2D Materials and Applications
- Physics of Superconductivity and Magnetism
- Advanced Condensed Matter Physics
- Inorganic Chemistry and Materials
- Advanced Thermoelectric Materials and Devices
- Magnetic and transport properties of perovskites and related materials
- MXene and MAX Phase Materials
- Superconductivity in MgB2 and Alloys
- Quantum and electron transport phenomena
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Thermal Expansion and Ionic Conductivity
- Chalcogenide Semiconductor Thin Films
- Electronic and Structural Properties of Oxides
- Magnetic properties of thin films
- Optical properties and cooling technologies in crystalline materials
- Peatlands and Wetlands Ecology
- Crystal Structures and Properties
- nanoparticles nucleation surface interactions
- Photorefractive and Nonlinear Optics
- Advanced Materials Characterization Techniques
Chinese Academy of Sciences
2020-2025
University of Chinese Academy of Sciences
2020-2025
Czech Academy of Sciences, Institute of Physics
2020-2025
National Laboratory for Superconductivity
2020-2024
Institute of Physics
2020-2024
University of Science and Technology of China
2022
Institute of Geographic Sciences and Natural Resources Research
2022
The Mn-based superconductor is rare owing to the strong magnetic pair-breaking effect. Here we report on discovery of pressure-induced superconductivity in KMn_{6}Bi_{5}, which becomes first ternary superconductor. At ambient pressure, quasi-one-dimensional KMn_{6}Bi_{5} an antiferromagnetic metal with T_{N}≈75 K. By measuring resistance and ac susceptibility under hydrostatic pressures up 14.2 GPa a cubic anvil cell apparatus, find that its transition can be suppressed completely at...
Magnetic Weyl semimetals (MWSMs) have attracted significant attention due to their intriguing physical properties and potential applications in spin-electronic devices. Here we report the characterization of NdAlSi including transport, magnetization, heat capacity on single crystals, as well band structure calculation. It is a newly proposed MWSM candidate which breaks both time-reversal spatial inversion symmetries. A temperature--magnetic field phase diagram experimentally established....
Unconventional superconductivity in bulk materials under ambient pressure is extremely rare among the 3d transition metal compounds outside layered cuprates and iron-based family. It predominantly linked to highly anisotropic electronic properties quasi-two-dimensional (2D) Fermi surfaces. To date, only known example of a Co-based exotic superconductor hydrated cobaltate, NaxCoO2·yH2O, its realized vicinity spin-1/2 Mott state. However, nature these still subject intense debate, therefore,...
Recent theoretical calculations have shown that ${\mathrm{Mn}}_{3}{\mathrm{Sn}}_{2}$, a well-known magnetocaloric material with multiple magnetic transitions, possesses both nodal lines and surfaces in its electronic structures, making it an excellent platform for studying anomalous transport properties topological candidates. In this work, we performed comprehensive electrical, thermal, thermoelectric measurements on ${\mathrm{Mn}}_{3}{\mathrm{Sn}}_{2}$ single crystals. The electrical...
Magnetic topological materials are a realization of topologically nontrivial electronic band structure with magnetic correlation effects; they offer novel opportunities in manipulating charge/spin transport as well spin texture. In the search for emergent phenomena that specific this class materials, here we report on type quantum oscillation polar Weyl semimetal (WSM) NdAlSi both temperature dependent electrical resistivity and heat at constant field. It is revealed arise from destructive...
CeRh2As2 is a newly discovered candidate of multiphase heavy-fermion superconductor (Tc=0.3 K) with intriguing physical properties. Here, we employ soft point-contact spectroscopy to investigate its energy gap behaviors in both the normal and superconducting states. The differential conductance below Tc reveals an estimated 2{\Delta}SC=0.24 meV thus extremely strong pairing strength 2{\Delta}SC/kBTc=8.8, which comparable those cuprates iron-based high-Tc superconductors as well...
Topological materials are of great interest because they can support metallic edge or surface states that robust against perturbations, with the potential for technological applications. Here, we experimentally explore light-induced non-equilibrium properties two distinct topological phases in NaCd4As3: a crystalline insulator (TCI) phase and (TI) phase. This material has protected by mirror symmetry TCI at room temperature, while it undergoes structural transition to TI below 200 K. After...
Abstract Magnetoresistance (MR) stands as a pivotal transport phenomenon within the realm of condensed matter physics. In recent years, materials exhibiting extremely large unsaturated magnetoresistance (XMR), which are often potential topological materials, have garnered significant attention. this study, we synthesized single crystal ZrBi 2 and performed electrical specific heat measurements on them. The resistivity displays metallic behavior with high residual resistance ratio (RRR)....
The advances in the field of unconventional superconductivity are largely driven by discovery novel superconducting systems. Here we report on border antiferromagnetic order a quasi-one-dimensional RbMn6Bi5 via measurements resistivity and magnetic susceptibility under high pressures. With increasing pressure, its transition with TN = 83 K at ambient pressure is first enhanced moderately then suppressed completely critical Pc 13 GPa, around which bulk emerges exhibits dome-like Tc(P) maximal...
Magnetic topological materials have attracted much attention due to the interplay between magnetism and electronic band structure, which may not only generate new exotic quantum states but also bring great potential applications. Here, we present Seebeck Nernst effects in magnetic Weyl semimetal NdAlSi as a function of temperature field. We find that power factor reaches...
Abstract Interfaces between materials with different electronic ground states have become powerful platforms for creating and controlling novel quantum of matter, in which inversion symmetry breaking other effects at the interface may introduce additional states. Among emergent phenomena, superconductivity is particular interest. Here, by depositing metal films on a newly identified topological semimetal tungsten carbide (WC) single crystal, interfacial obtained, evidenced from soft...
Finding promising materials that show large thermoelectricity at low temperatures is crucial for low-temperature refrigeration applications. Here, we report a significantly thermoelectric power factor (PF) up to 50 μW cm−1 K−2 an extremely temperature of ∼8 K in quasi-one-dimensional (Q1D) antiferromagnet KMn6Bi5, which highly electrical conductivity and dramatic enhancement Seebeck coefficient may favor its occurrence. In addition, giant Nernst signal has also been detected with maximum...
A new ‘seeding’ approach for the intercalation of protonated 1,10-phenanthroline into layered NiPS<sub>3</sub> by using dopants as reaction active sites is proposed.
We report a systematic study of the magnetoresistance, Hall effect, and electronic structure in an iodine-intercalated tungsten ditelluride (${\mathrm{WTe}}_{2}\mathrm{I}$) single crystal, which crystallizes centrosymmetric structure. ${\mathrm{WTe}}_{2}\mathrm{I}$ presents significant anisotropic magnetotransport behavior with magnetic field rotated $xz$ $yz$ planes violation Kohler's rule. Unexpectedly, nonsaturating linear magnetoresistance (LMR) was observed under parallel to $z$ axis...
We report a comprehensive high-pressure study on the monoclinic TlFeSe 2 single crystal, which is an antiferromagnetic insulator with quasi-one-dimensional crystal structure at ambient pressure. It found that undergoes pressure-induced structural transformation from phase to orthorhombic above P c ≈ 13 GPa, accompanied large volume collapse of Δ V / 0 = 8.3%. In low-pressure phase, insulating state easily metallized pressures GPa; while possible superconductivity <?CDATA...
We synthesize high-quality single crystal of CeGaSi by a Ga self-flux method and investigate its physical properties through magnetic susceptibility, specific heat electrical resistivity measurements as well high pressure effect. Magnetic reveal that an antiferromagnetic order develops below T m ∼ 10.4 K with moments orientated in the ab plane. The enhanced electronic coefficient negative logarithmic slope indicate title compound belongs to family Kondo system heavy fermion ground states....
The oxyselenide $\mathrm{K}{\mathrm{V}}_{2}\mathrm{S}{\mathrm{e}}_{2}\mathrm{O}$, featuring an anti-${\mathrm{K}}_{2}\mathrm{Ni}{\mathrm{F}}_{4}$-type layered structure, was successfully synthesized using a self-flux method. Comprehensive structural, electrical, and heat transport, as well magnetism measurements, were performed on both single crystals polycrystals. At 105 K, density-wave (DW)-like anomalous transition is revealed in temperature-dependent resistivity Hall coefficient,...
Abstract Superconductivity becomes more interesting when it encounters dimensional constraint or topology because is of importance for exploring exotic quantum phenomena developing superconducting electronics. Here, the coexistence naturally formed surface state and 3D topological Dirac in single crystals BaMg 2 Bi reported. The electronic structure obtained from first‐principles calculations demonstrates that an ideal material, which point very close to Fermi level no other energy band...
Abstract Iron-based superconductors provide a rich platform to investigate the interplay between unconventional superconductivity, nematicity, and magnetism. The electronic structure magnetic properties of iron-based are highly sensitive pnictogen height. Coherent excitation A1g phonon by femtosecond laser directly modulates height, which has been used control physical superconductors. Previous studies show that driven resulted in transient increase height BaFe2As2, favoring an enhanced Fe...
Mn 3 Sn 2 has been proposed as an ideal material for magnetic refrigeration. It undergoes two successive ferromagnetic transitions ( T C1 = 262 K and C2 227 K) one antiferromagnetic transition N 192 K). Herein we report, the first time, preparation of single crystals from Bi flux. The resultant anisotropic properties magnetocaloric effect are investigated along three principal crystallographic directions crystal. Significant anisotropy susceptibility multiple field-induced metamagnetic were...
The interplay between magnetism and the topology of electronic band structure may generate new exotic quantum states. Here we report on a type oscillations in temperature dependent electrical resistivity specific heat at constant magnetic field polar Weyl semimetal (WSM) NdAlSi. These novel phenomena arise from destructive interference spin-split Fermi surfaces due to strong fermions-4f electrons exchange interaction combined with Rashba-Dresselhaus (RD) Zeeman effects. Our findings pave way...