Publication | Open Access
Hydrostatic pressure effect on <i>T</i><sub>c</sub> of new BiS<sub>2</sub>‐based Bi<sub>4</sub>O<sub>4</sub>S<sub>3</sub> and NdO<sub>0.5</sub>F<sub>0.5</sub>BiS<sub>2</sub> layered superconductors
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Citations
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References
2013
Year
Superconducting MaterialEngineeringBismuth-based SuperconductorsCritical CurrentsNovel SuperconductorsSuperconductivityQuantum MaterialsHigh Tc SuperconductorsT CThermodynamicsSuperconducting DevicesLow-temperature SuperconductivityMaterials ScienceNew Layered SuperconductorsHigh-tc SuperconductivityPhysicsHydrostatic Pressure EffectO 4Solid-state PhysicHigh-temperature SuperconductivityCryogenicsApplied PhysicsCondensed Matter PhysicsQuantum Superconductivity
Abstract We investigate the external hydrostatic pressure effect on the superconducting transition temperature ( T c ) of new layered superconductors Bi 4 O 4 S 3 and NdO 0.5 F 0.5 BiS 2 . Though the T c is found to have a moderate decrease from 4.8 K to 4.3 K (d T c onset /d P = –0.28 K/GPa) for Bi 4 O 4 S 3 superconductor, the same increases from 4.6 K to 5 K (d T c onset /d P = 0.44 K/GPa) up to 1.31 GPa followed by a sudden decrease from 5 K to 4.7 K up to 1.75 GPa for NdO 0.5 F 0.5 BiS 2 superconductor. The variation of T c in these systems may be correlated to an increase or decrease of the charge carriers in the density of states under externally applied pressure. (© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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