Physics – Condensed Matter – Superconductivity
Scientific paper
2011-10-27
Physics
Condensed Matter
Superconductivity
9 pages, 6 figures
Scientific paper
Two single crystalline samples with the same nominal composition of Rb0.8Fe2Se2 prepared via slightly different precursor routes under the same thermal processing conditions were investigated at ambient and high pressures. One sample was found superconducting with a Tc of ~31 K without the previously reported resistivity-hump and the other was unexpectedly found to be a narrow-gap semiconductor. While the high pressure data can be understood in terms of pressure-induced variation in doping, the detailed doping effect on superconductivity is yet to be determined.
Chu Cheng-Wei
Deng L. Z.
Gooch Melissa
Lorenz Beat
Lv Benjian
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