摘要
Two single crystalline samples with the same nominal composition of Rb 0.8Fe2Se2 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.
原文 | English |
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文章編號 | 184517 |
期刊 | Physical Review B - Condensed Matter and Materials Physics |
卷 | 84 |
發行號 | 18 |
DOIs | |
出版狀態 | Published - 2011 11月 15 |
All Science Journal Classification (ASJC) codes
- 電子、光磁材料
- 凝聚態物理學