Suppression of the superconducting transition of (, Dy, and Ho)
JA Rodgers, GBS Penny, A Marcinkova, JWG Bos… - Physical Review B …, 2009 - APS
Physical Review B—Condensed Matter and Materials Physics, 2009•APS
A suppression of superconductivity in the late rare-earth R FeAsO 1− x F x materials is
reported. The maximum critical temperature (T c) decreases from 51 K for R= Tb to 36 K for
HoFeAsO 0.9 F 0.1, which has been synthesized under 10 GPa pressure. This suppression
is driven by a decrease in the Fe-As-Fe angle below an optimum value of 110.6°, as the
angle decreases linearly with unit-cell volume (V) across the R FeAsO 1− x F x series. A
crossover in electronic structure around this optimum geometry is evidenced by a change in …
reported. The maximum critical temperature (T c) decreases from 51 K for R= Tb to 36 K for
HoFeAsO 0.9 F 0.1, which has been synthesized under 10 GPa pressure. This suppression
is driven by a decrease in the Fe-As-Fe angle below an optimum value of 110.6°, as the
angle decreases linearly with unit-cell volume (V) across the R FeAsO 1− x F x series. A
crossover in electronic structure around this optimum geometry is evidenced by a change in …
A suppression of superconductivity in the late rare-earth materials is reported. The maximum critical temperature decreases from 51 K for to 36 K for , which has been synthesized under 10 GPa pressure. This suppression is driven by a decrease in the Fe-As-Fe angle below an optimum value of , as the angle decreases linearly with unit-cell volume across the series. A crossover in electronic structure around this optimum geometry is evidenced by a change in sign of the compositional , from negative values for previously reported large materials to positive for .
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