Physics – Condensed Matter – Superconductivity
Scientific paper
2009-04-09
Physics
Condensed Matter
Superconductivity
2 Figures
Scientific paper
We demonstrate that the anisotropy R of the paramagnetic spin fluctuations
grows toward Tc at 75As sites in the optimally electron-doped superconductor
Ba[(Fe0.92Co0.08)2]2As2, with stronger spin fluctuations along the c-axis. Our
finding is in remarkable contrast with the case of high T$_c$ cuprates, where R
is independent of temperature above Tc.
Ahilan Kanagasingham
Imai Takashi
Jin Rongying
Mandrus David
McGuire Michael A.
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