Correlated pressure effects on the structure and superconductivity ofLaFeAsO0.9F0.1

Direct observation of the influence of the As-Fe-As angle on theTcof superconducting SmFeAsO1−xFGarbarino1, Weht2, Sow3 et al. 2011Phys. Rev. BSelf Cite

“…Fig 1 K values have been reported in other compounds of the same 1111 family 21,23 . In the inset of Fig.…”

Inelastic X-ray scattering investigations of lattice dynamics in SmFeAsO1−F superconductors

“…SmFeAs(O 0.9 F 0.1 ) samples (Sm-1111) was prepared under high pressure and high temperature using a "belt" type high pressure cell in a similar way to that reported previously for LaFeAsO 1−x F x [11] . Sm, Fe, Fe 2 O 3 , As and SmF 3 (in the case of the fluorine doped sample) powders were mixed together and pressed in the form of cylindrical pellets.…”

Pressure-induced shift ofTcinKxSr1−xF

“…After the increase in T c at low pressure ͑p͒, for compositions x Յ 0.1, T c dropped precipitously with further increase in p. 2 The negative pressure coefficient of R͑O / F͒FeAs compounds with high T c 's was also confirmed for LaO 0.9 F 0.1 FeAs, CeO 0.88 F 0.12 FeAs, and RO 0.85 FeAs ͑R =Sm or Nd͒. [27][28][29] However, for a deeper understanding of the physics of the FeAs superconductors and the suspected similarities to the high-T c cuprates, a more systematic investigation of the effect of pressure for different carrier concentrations covering the complete phase diagram is warranted.…”