Publications by authors named "Zhangtu Tang"

Article Synopsis
  • A new compound called KMnBi has been discovered, featuring quasi-one-dimensional nanowires made of manganese (Mn) and bismuth (Bi) atoms arranged in a unique structure.
  • The Mn atoms form nanorods centered in Bi nanotubes, stabilized by Mn-Mn bonding and linked by weak Bi-Bi bonds while being balanced by potassium (K) ions.
  • Magnetic studies show the compound exhibits antiferromagnetic behavior at around 75 K and a shift in resistivity from semiconducting to metallic as temperature decreases, indicating changes in how electrons move between columns.
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RbCrAs is a structurally one-dimensional superconductor containing CrAs chains with a superconducting transition temperature of [Formula: see text] K. Here we report the electrical resistance measurements for RbCrAs single crystals, under magnetic fields up to 29.5 T and at temperatures down to 0.

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Article Synopsis
  • * The compound exhibits bulk superconductivity at a certain temperature, confirmed through various measurements including electrical resistivity, magnetic susceptibility, and heat capacity.
  • * The study highlights an impressive initial slope of the upper critical field for the polycrystalline sample, indicating strong superconducting properties.
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Non-centrosymmetric superconductors, whose crystal structure is absent of inversion symmetry, have recently received special attentions due to the expectation of unconventional pairings and exotic physics associated with such pairings. The newly discovered superconductors ACrAs (A = K, Rb), featured by the quasi-one dimensional structure with conducting CrAs chains, belongs to such kind of superconductor. In this study, we are the first to report the finding that superconductivity of ACrAs (A = K, Rb) has a positive correlation with the extent of non-centrosymmetry.

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We report the synthesis, crystal structure, and physical properties of a quinary iron arsenide fluoride, KCa2Fe4As4F2. The new compound crystallizes in a body-centered tetragonal lattice (space group I4/mmm, a = 3.8684(2) Å, c = 31.

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We report the first nitrogen-containing iron-pnictide superconductor ThFeAsN, which is synthesized by a solid-state reaction in an evacuated container. The compound crystallizes in a ZrCuSiAs-type structure with the space group P4/nmm and lattice parameters a = 4.0367(1) Å and c = 8.

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EuBiS2F is a self-doped superconductor due to the mixed valence of Eu. Here we report that, with the Ce substitution for Eu by 50 at.%, the material exhibits ferromagnetic ordering at 8 K for the Ce-4 f moment, superconductivity at 2.

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We have synthesized a novel europium bismuth sulfofluoride, Eu3Bi2S4F4, by solid-state reactions in sealed evacuated quartz ampules. The compound crystallizes in a tetragonal lattice (space group I4/mmm, a = 4.0771(1) Å, c = 32.

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A new quinary oxysulfide LaPbBiS3O was designed and successfully synthesized via a solid-state reaction in a sealed evacuated quartz tube. This material, composed of stacked NaCl-like [M4S6] (where M = Pb, Bi) layers and fluorite-type [La2O2] layers, crystallizes in the tetragonal space group P4/nmm with a = 4.0982(1) Å, c = 19.

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Superconductivity in low-dimensional compounds has long attracted much interest. Here we report superconductivity in a low-dimensional ternary telluride Ta4Pd3Te16 in which the repeating layers contain edge-sharing octahedrally coordinated PdTe2 chains along the crystallographic b axis. Measurements of electrical resistivity, magnetic susceptibility and specific heat on the Ta4Pd3Te16 crystals, grown via a self-flux method, consistently demonstrate bulk superconductivity at 4.

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