Hydrostatic pressure effect on Tc of new BiS2 based Bi4O4S3 and NdO0.5F0.5BiS2 layered superconductors

Abstract

We investigate the external hydrostatic pressure effect on the superconducting transition temperature (Tc) of new layered superconductors Bi4O4S3 and NdO0.5F0.5BiS2. Though the Tc is found to have moderate decrease from 4.8 K to 4.3 K (dTconset/dP = -0.28 K/GPa) for Bi4O4S3 superconductor, the same increases from 4.6 K to 5 K (dTconset/dP = 0.44 K/GPa) upto 1.31 GPa followed by a sudden decrease from 5 K to 4.7 K upto 1.75 GPa for NdO0.5F0.5BiS2 superconductor. The variation of Tc in these systems may be correlated to increase or decrease of the charge carriers in the density of states under externally applied pressure.

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Cited by in corpus (15)

• Pressure-induced enhancement of superconductivity and suppression of semiconducting behavior in Ln(O0.5F0.5)BiS2 (Ln = La, Ce) compounds
• Material Development and Physical Properties of BiS2-Based Layered Compounds
• Growth and superconducting properties of F-substituted ROBiS2 (R = La, Ce, Nd) single crystals
• Coexistence of bulk superconductivity and ferromagnetism in CeO1-xFxBiS2
• Role of the Ce valence in the coexistence of superconductivity and ferromagnetism of CeO${}_{1-x}$F${}_x$BiS${}_2$ revealed by Ce $L_3$-edge x-ray absorption spectroscopy
• Enhancement of superconductivity near the pressure-induced semiconductor-metal transition in BiS2-based compounds LnO(0.5)F(0.5)BiS2 (Ln = La, Ce, Pr, Nd)
• Appearance of bulk Superconductivity under Hydrostatic Pressure in Sr0.5RE0.5FBiS2 (RE = Ce, Nd, Pr and Sm) compounds
• Impact of hydrostatic pressure on superconductivity of Sr0.5La0.5FBiS2
• Raman scattering investigation of the electron-phonon coupling in superconducting Nd(O,F)BiS${}_2$
• Synthesis and properties of SmO0.5F0.5BiS2 and enhancement in Tc in La1-ySmyO0.5F0.5BiS2
• Superconducting and magneto-transport properties of BiS2 based superconductor PrO1-xFxBiS2 (x = 0 to 0.9)
• Theoretical aspects of the study on the new bismuth chalcogenide based superconductors
• C-axis electrical resistivity of PrO${}_{1-a}$F${}_a$BiS${}_2$ single crystals
• Effect of yttrium substitution on the superconducting properties of the system La${}_{1-\text{x}}$Y${}_{\text{x}}$O${}_{0.5}$F${}_{0.5}$BiS${}_2$
• Anisotropic superconductivity in La(O,F)BiSeS crystals revealed by field-angle dependent Andreev reflection spectroscopy