Superconducting and magneto-transport properties of BiS2 based superconductor PrO1-xFxBiS2 (x = 0 to 0.9)

Abstract

We report superconducting properties of PrO1-xFxBiS2 compounds, synthesized by the vacuum encapsulation technique. The synthesized PrO1-xFxBiS2 (x=0.1, 0.3, 0.5, 0.7 and 0.9) samples are crystallized in a tetragonal P4/nmm space group. Both transport and DC magnetic susceptibility measurements showed bulk superconductivity below 4 K. The maximum Tc is obtained for x = 0.7 sample. Under applied magnetic field both Tc onset and Tc (R =0) decrease to lower temperatures. We estimated highest upper critical field [Hc2(0)] for PrO0.3F0.7BiS2 sample to be above 4 T (Tesla). The thermally activated flux flow (TAFF) activation energy (U0) is estimated 54.63 meV in 0.05 Tesla field for PrO0.3F0.7BiS2 sample. Hall measurement results showed that electron charge carriers are the dominating ones in these compounds. Thermoelectric effects (Thermal conductivity and Seebeck coefficient) data suggest strong electron-electron correlations in this material.

16 pages text + figs

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Cited by in corpus (8)

• Material Development and Physical Properties of BiS2-Based Layered Compounds
• Appearance of bulk Superconductivity under Hydrostatic Pressure in Sr0.5RE0.5FBiS2 (RE = Ce, Nd, Pr and Sm) compounds
• Coexistence of ferromagnetism and superconductivity in CeO${}_{0.3}$F${}_{0.7}$BiS${}_2$
• Effect of high pressure annealing on the normal state transport of LaO0.5F0.5BiS2
• C-axis electrical resistivity of PrO${}_{1-a}$F${}_a$BiS${}_2$ single crystals
• Electron-Phonon Superconductivity in LaO${}_{0.5}$F${}_{0.5}$BiSe${}_2$
• Mn-doping induced ferromagnetism and enhanced superconductivity in Bi_4-x Mn_x O_4 S_3 (0.075 < = x < = 0.15)
• The upper critical field in the BiCh2-based superconductors CeOBiS1.7Se0.3 and PrO0.5F0.5BiS2-xSex (x = 0, 0.3)