Long Chen

ORCID: 0000-0003-1992-8434
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About
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Research Areas
  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Topological Materials and Phenomena
  • Advanced Condensed Matter Physics
  • Iron-based superconductors research
  • Rare-earth and actinide compounds
  • Crystallography and molecular interactions
  • 2D Materials and Applications
  • Physics of Superconductivity and Magnetism
  • Graphene research and applications
  • MXene and MAX Phase Materials
  • Superconductivity in MgB2 and Alloys
  • Quantum, superfluid, helium dynamics
  • Quantum Chromodynamics and Particle Interactions
  • Black Holes and Theoretical Physics
  • Metamaterials and Metasurfaces Applications
  • Inorganic Chemistry and Materials
  • Electronic and Structural Properties of Oxides
  • Microfluidic and Bio-sensing Technologies
  • Aluminum Alloys Composites Properties
  • Crystal Structures and Properties
  • Liquid Crystal Research Advancements
  • Cloud Data Security Solutions
  • Electromagnetic wave absorption materials
  • Magnetic and transport properties of perovskites and related materials

Czech Academy of Sciences, Institute of Physics
2023-2024

Chinese Academy of Sciences
2021-2024

Institute of Physics
2019-2024

University of Chinese Academy of Sciences
2019-2024

Institute of Software
2024

Ningbo Institute of Industrial Technology
2024

Shandong University of Science and Technology
2023

China Electronics Technology Group Corporation
2023

Technical Institute of Physics and Chemistry
2022

Nanjing Forestry University
2020

Abstract Rare-earth engineering is an effective way to introduce and tune magnetism in topological kagome materials, which have been acting as a fertile platform investigate the quantum interactions between geometry, topology, spin, correlation. Here, we report synthesis, structure, physical properties of titanium-based metals RETi 3 Bi 4 (RE = Yb, Pr, Nd) with various magnetic states. They all crystallize orthogonal space group Fmmm (No. 69), featuring distorted titanium lattices rare-earth...

10.1038/s43246-024-00513-4 article EN cc-by Communications Materials 2024-05-10

Cold neutron has a strong ability to penetrate metal materials and identify light elements, making it an ideal nondestructive testing technique for detecting cracks, bubbles, or other defects in metals. However, the low imaging resolution detection efficiency of scintillators limit application cold technology imaging. The particle size luminescence properties scintillator have important influence on spatial radiography. Here, we report series NaF-doped Gd2O2S:Tb3+ (NaF-d-GOS:Tb) with...

10.1021/acsanm.2c01561 article EN ACS Applied Nano Materials 2022-06-02

Surface nonlinear optics are essential for developments in integrated photonics and micro/nano optoelectronics. However, the optical conversion efficiency on a surface is restricted by finite susceptibility of matter intrinsic atomic-layered interaction length between light matter. In this work, based an angular engineering strategy, it demonstrated that centrosymmetric topological semimetal HfGe

10.1002/adma.202310438 article EN Advanced Materials 2024-01-02

Abstract The polarization modulation of deep‐UV light is an important process that incorporates functionality to selectively respond light‐mater interaction. Typically, optical anisotropy foremost the use efficiency birefringent crystals. Herein, a new congruently melting polyborate with extremely large birefringence (Δ n (001) =0.14@589.3 nm) and band gap (6.89 eV) discovered as high performance crystal, which breaks current deadlock polyborates usually show small birefringence. rigid...

10.1002/chem.202203000 article EN Chemistry - A European Journal 2022-10-25

A single material achieving multiple topological phases can provide potential application for spintronics, whereas the candidate materials are very limited. Here, we report on structure, physical properties, and possible emergence of in recently discovered, air-stable EuCuBi crystal. crystallizes hexagonal space group $P{6}_{3}/mmc$ (No. 194) ZrBeSi-type structure with an antiferromagnetic (AFM) ground state below ${T}_{N}=11.2$ K. There is a competition between AFM ferromagnetic (FM)...

10.1103/physrevb.108.115126 article EN Physical review. B./Physical review. B 2023-09-13

Smart responsive materials are capable of responding to external stimuli and, compared traditional materials, can be effectively reused and reduce usage costs in applications. However, smart often face challenges such as the inability repair extensive damage, instability long-term performance, inapplicability extreme environments. This study combines 2D diamond nanosheets with organic fluorinated molecules prepare a nanofluid (fluorinated nanosheets, F-DN) self-healing self-adhesion...

10.1021/acsami.4c05371 article EN ACS Applied Materials & Interfaces 2024-07-29

Quasi-one-dimensional materials exhibit not only unique crystal structure but also abundant physical properties such as charge density wave, Luttinger liquid, and superconductivity. Here we report the discovery, structure, of a new manganese-based quasi-one-dimensional material RbMn6Bi5, which crystallizes in monoclinic space group C2/m (No. 12) with lattice parameters = 23.286(5) Å, b 4.6215(9) c 13.631(3) β 125.00(3)°. The features [Mn6Bi5]−1 double-walled column extending along [010]...

10.1021/acs.inorgchem.1c01318 article EN Inorganic Chemistry 2021-08-26

Mn-based superconductor is rare and recently reported in quasi-one-dimensional KMn$_6$Bi$_5$ with [Mn$_6$Bi$_5$]-columns under high pressure. Here we report the synthesis, magnetic properties, electrical resistivity, specific heat capacity of newly-discovered NaMn$_6$Bi$_5$ single crystal. Compared other AMn$_6$Bi$_5$ (A = K, Rb, Cs), has larger intra-column Bi-Bi bond length, which may result two decoupled antiferromagnetic transitions at 47.3 K 52.3 K. The relatively lower transition...

10.1088/0256-307x/39/4/047401 article EN Chinese Physics Letters 2022-03-25

A new series of compounds, ANi5Bi5.6+δ (where = K, Rb, and Cs) are discovered with a quasi-one-dimensional (Q1D) [Ni5Bi5.6+δ]- double-walled column coaxial inner one-dimensional Bi atomic chain. The columns linked to each other by intercolumn Bi-Bi bonds separated an A+ cation. Typical metallic behaviors strong correlation itinerant electrons the Sommerfeld coefficient enhanced increasing cationic radius were experimentally observed supported first-principles calculations. Compared AMn6Bi5...

10.1021/acs.inorgchem.2c03870 article EN Inorganic Chemistry 2023-02-23

Topological crystalline insulators (TCIs) with hourglass fermion surface state have attracted a lot of attention and are further enriched by symmetries magnetic order. Here, the emergence exotic phases in newly discovered, air-stable ErAsS single crystals shown. In paramagnetic phase, is expected to be TCI protected nonsymmorphic symmetry. Dirac-cone-like bands nearly linear dispersions large energy range experimentally observed, consistent well theoretical calculations. Below TN ≈ 3.27 K,...

10.1002/adma.202110664 article EN Advanced Materials 2022-06-10

The observation of clean 2D superconductivity and bosonic Landau levels below 0.85 K in superlattice van der Waals material ${\mathrm{Ba}}_{6}{\mathrm{Nb}}_{11}{\mathrm{S}}_{28}$ have received much interest. Here we report the crystal structure, Hall resistivity, its sister compound, ${\mathrm{Ba}}_{6}{\mathrm{Nb}}_{11}{\mathrm{Se}}_{28}$. atomic-resolution transmission electron microscopy images reveal an alternate stacking $2H\text{\ensuremath{-}}{\mathrm{NbSe}}_{2}$ with a 3...

10.1103/physrevmaterials.6.044806 article EN Physical Review Materials 2022-04-22

One of the universal features unconventional superconductors is that superconducting (SC) state developed in proximity an antiferromagnetic (AFM) state. Unified understanding interplay between these two states different systems one key issues to uncover underlying physics SC mechanism. Here, we report a pressure-induced superconductivity quasi-one-dimensional $\mathrm{Cs}{\mathrm{Mn}}_{6}{\mathrm{Bi}}_{5}$ compound bears AFM at ambient pressure. The appears critical pressure $({P}_{c})$...

10.1103/physrevb.106.214515 article EN Physical review. B./Physical review. B 2022-12-16

Here, we report the crystal structures and properties of RbxNbSe2, with 0 ≤ x 0.5. With Rb intercalation, RbxNbSe2 evolves from 2H (Phase I) for 0.025, to 6R II) ∼ 0.2 space group R3m (no. 166), finally IV) 0.375 0.5 P63/mmc 194). In addition, Phase II is found transform a rare 6H structure III) 194) by annealing at relatively low temperature. We show first phase in intercalated transition-metal dichalcogenides (TMDs) family obtained through solid-state reaction. Moreover, both phases are...

10.1021/acs.inorgchem.9b00862 article EN Inorganic Chemistry 2019-05-22

Quantum materials whose atoms are arranged on a lattice of corner-sharing triangles, i.e., the kagome lattice, have recently emerged as captivating platform for investigating exotic correlated and topological electronic phenomena. Here, we combine ultralow temperature angle-resolved photoemission spectroscopy (ARPES) with scanning tunneling microscopy density functional theory calculations to reveal fascinating structure bilayer-distorted material <a:math...

10.1103/physrevb.110.l121114 article EN cc-by Physical review. B./Physical review. B 2024-09-19

Two-dimensional (2D) van der Waals material is a focus of research for its widespread application in optoelectronics, memories, and spintronics. The ternary compound Nb 2 SiTe 4 semiconductor with excellent air stability small cleavage energy, which suitable preparing few layers counterpart to explore novel properties. Here, properties bulk large in-plane electrical anisotropy are demonstrated. It found that hole carriers dominate at temperature above 45 K carrier active energy 31.3 meV....

10.1088/1674-1056/ac068f article EN Chinese Physics B 2021-05-29

CeCr 2 Si C bulk single crystals with high purity were firstly grown from temperature solutions and showed a native ferromagnetic behavior transition of ∼12.4 K.

10.1039/d2ta07902j article EN Journal of Materials Chemistry A 2023-01-01

Kagome magnets with diverse topological quantum responses are crucial for next-generation engineering. The anisotropic magnetism and band evolution induced by ferromagnetic phase transition (FMPT) is reported in a newly discovered titanium-based kagome ferromagnet S mTi3 Bi4, which features distorted Ti lattice m atomic zig-zag chains. Temperature-dependent resistivity, heat capacity, magnetic susceptibility reveal ordering temperature Tc of 23.2 K. A large anisotropy, observed applying the...

10.48550/arxiv.2308.14349 preprint EN cc-by arXiv (Cornell University) 2023-01-01

The crystal structure, magnetic, electronic, and thermal properties of $\mathrm{Sr}{({\mathrm{Fe}}_{1\ensuremath{-}x}{\mathrm{Mn}}_{x})}_{2}{\mathrm{As}}_{2}$ crystals grown by transition metal arsenide flux have been systematically investigated. A miscibility gap with $x$ ranging from 0.4362(4) to 0.9612(9) is found in the $\mathrm{Sr}({\mathrm{Fe}}_{1\ensuremath{-}x}{\mathrm{Mn}}_{x}){\mathrm{As}}_{2}$ system---for $x&lt;0.4362(4)$, phase remains parent tetragonal structure [space group...

10.1103/physrevb.103.134509 article EN Physical review. B./Physical review. B 2021-04-09

We present the renormalization constant of pseudoscalar operator defined with a non-anticommuting $\gamma_5$ in dimensional regularization up to four-loop order perturbative Quantum Chromodynamics (QCD). Furthermore, by virtue renormalization-group invariance relation between scalar and operator, we predict $\overline{\mathrm{MS}}$ factor for latter at five-loop QCD.

10.48550/arxiv.2410.18674 preprint EN arXiv (Cornell University) 2024-10-24
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