Properties of Binary Transition-Metal Arsenides (TAs)

Abstract

We present thermodynamic and transport properties of transition-metal (T) arsenides, TAs with T = Sc to Ni (3d), Zr, Nb, Ru (4d), Hf and Ta (5d). Characterization of these binaries is made with powder X-ray diffraction, temperature and field-dependent magnetization and resistivity, temperature-dependent heat capacity, Seebeck coefficient, and thermal conductivity. All binaries show metallic behavior except TaAs and RuAs. TaAs, NbAs, ScAs and ZrAs are diamagnetic, while CoAs, VAs, TiAs, NiAs and RuAs show approximately Pauli paramagnetic behavior. FeAs and CrAs undergo antiferromagnetic order below TN = 71 K and TN \approx 260 K, respectively. MnAs is a ferromagnet below TC = 317 K and undergoes hexagonal-orthorhombic-hexagonal transitions at TS = 317 K and 384 K, respectively. For TAs, Seebeck coefficients vary between + 40 uV/K and - 40 uV/K in the 2 K to 300 K range, whereas thermal conductivity values stay below 18 W/(m K). The Sommerfeld-coefficient γ are less than 10 mJ/(K2mol). At room temperature with application of 8 Tesla magnetic field, large positive magnetoresistance is found for TaAs (~25%), MnAs (~90%) and for NbAs (~75%).

7 figures; Will be published in the upcoming focus issue in Superconductor Science and Technology

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Cited by in corpus (23)

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• Electron scattering in tantalum monoarsenide
• Magnetotransport of single crystalline NbAs
• Thermoelectric properties of semimetals
• Non-stoichiometry and Defects in the Weyl Semimetals TaAs, TaP, NbP, and NbAs
• Coexistence of Weyl Physics and Planar Defects in Semimetals TaP and TaAs
• Pressure dependence of the magnetic order in CrAs: a neutron diffraction investigation
• Pressure-induced electronic phase separation of magnetism and superconductivity in CrAs
• Antiferromagnetism in trigonal SrMn2As2 and CaMn2As2 single crystals
• Crystallography and Physical Properties of BaCo2As2, Ba{0.94}K{0.06}Co2As2 and Ba{0.78}K{0.22}Co2As2
• Metallic behavior induced by potassium doping of the trigonal antiferromagnetic insulator EuMn2As2
• Probing the superconducting gap structure in the noncentrosymmetric topological superconductor ZrRuAs
• Electron spin dynamics of two-dimensional layered materials
• High-pressure growth and characterization of bulk MnAs single crystals
• Elucidation of the helical spin structure of FeAs
• Single Crystal Growth of the New Pressure-induced-superconductor CrAs via Chemical Vapor Transport
• Superlattice formation lifting degeneracy protected by non-symmorphic symmetry through a metal-insulator transition in RuAs
• Quantum Oscillations in the Anomalous Spin Density Wave State of FeAs
• CoAs: The line of 3d demarcation
• Magnetic correlations in the pressure-induced superconductor CrAs investigated by ${}^{75}$As nuclear magnetic resonance
• Anomalous magneto-elastic and charge doping effects in thallium-doped BaFe2As2
• Optical and photoelectrical studies on anisotropic metal-insulator transition of RuAs
• Lattice Disorder Effect on Magnetic Ordering of Iron Arsenides