Microscopic annealing process and its impact on superconductivity in T '-structure electron-doped copper oxides
文献类型：期刊论文
| 作者 | Kang, HJ ; Dai, PC ; Campbell, BJ ; Chupas, PJ ; Rosenkranz, S ; Lee, PL ; Huang, QZ ; Li, SL ; Komiya, S ; Ando, Y |
| 刊名 | NATURE MATERIALS
 |
| 出版日期 | 2007 |
| 卷号 | 6期号:3页码:224 |
| 关键词 | CRYSTAL NEUTRON-DIFFRACTION SINGLE-CRYSTAL OXYGEN DEFICIENCY COMPOUND PHASE |
| ISSN号 | 1476-1122 |
| 通讯作者 | Kang, HJ (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. |
| 中文摘要 | High-transition-temperature superconductivity arises in copper oxides when holes or electrons are doped into the CuO2 planes of their insulating parent compounds. Whereas hole doping quickly induces metallic behaviour and superconductivity in many cuprates, electron doping alone is insuffcient in materials such as R2CuO4 (R is Nd, Pr, La, Ce and so on), where it is necessary to anneal an as grown sample in a low-oxygen environment to remove a tiny amount of oxygen in order to induce superconductivity. Here we show that the microscopic process of oxygen reduction repairs Cu deficiencies in the as-grown materials and creates oxygen vacancies in the stoichiometric CuO2 planes, effectively reducing disorder and providing itinerant carriers for superconductivity. The resolution of this long-standing materials issue suggests that the fundamental mechanism for superconductivity is the same for electron- and hole-doped copper oxides. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2014-02-20 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57857]  |
| 专题 | 物理研究所_所内人员在其他单位发表论文题录信息_所内人员在其他单位发表论文题录信息_期刊论文 |
| 推荐引用方式 GB/T 7714 | Kang, HJ,Dai, PC,Campbell, BJ,et al. Microscopic annealing process and its impact on superconductivity in T '-structure electron-doped copper oxides[J]. NATURE MATERIALS,2007,6(3):224. |
| APA | Kang, HJ.,Dai, PC.,Campbell, BJ.,Chupas, PJ.,Rosenkranz, S.,...&Ando, Y.(2007).Microscopic annealing process and its impact on superconductivity in T '-structure electron-doped copper oxides.NATURE MATERIALS,6(3),224. |
| MLA | Kang, HJ,et al."Microscopic annealing process and its impact on superconductivity in T '-structure electron-doped copper oxides".NATURE MATERIALS 6.3(2007):224. |
入库方式： OAI收割
来源：物理研究所
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