From antiferromagnetic insulator to correlated metal in pressurized and doped LaMnPO
文献类型：期刊论文
| 作者 | Simonson, JW; Yin, ZP; Pezzoli, M; Guo, J; Liu, J; Post, K; Efimenko, A; Hollmann, N; Hu, Z; Lin, HJ |
| 刊名 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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| 出版日期 | 2012 |
| 卷号 | 109期号:27页码:E1815-E1819 |
| 关键词 | correlated electron systems electronic delocalization transition |
| 英文摘要 | Widespread adoption of superconducting technologies awaits the discovery of new materials with enhanced properties, especially higher superconducting transition temperatures T-c. The unexpected discovery of high T-c superconductivity in cuprates suggests that the highest T(c)s occur when pressure or doping transform the localized and moment-bearing electrons in antiferromagnetic insulators into itinerant carriers in a metal, where magnetism is preserved in the form of strong correlations. The absence of this transition in Fe-based superconductors may limit their T(c)s, but even larger T(c)s may be possible in their isostructural Mn analogs, which are antiferromagnetic insulators like the cuprates. It is generally believed that prohibitively large pressures would be required to suppress the effects of the strong Hund's rule coupling in these Mn-based compounds, collapsing the insulating gap and enabling superconductivity. Indeed, no Mn-based compounds are known to be superconductors. The electronic structure calculations and X-ray diffraction measurements presented here challenge these long held beliefs, finding that only modest pressures are required to transform LaMnPO, isostructural to superconducting host LaFeAsO, from an antiferromagnetic insulator to a metallic antiferromagnet, where the Mn moment vanishes in a second pressure-driven transition. Proximity to these charge and moment delocalization transitions in LaMnPO results in a highly correlated metallic state, the familiar breeding ground of superconductivity. |
| 学科主题 | Science & Technology - Other Topics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000306641100005 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224368]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Simonson, JW,Yin, ZP,Pezzoli, M,et al. From antiferromagnetic insulator to correlated metal in pressurized and doped LaMnPO[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2012,109(27):E1815-E1819. |
| APA | Simonson, JW.,Yin, ZP.,Pezzoli, M.,Guo, J.,Liu, J.,...&Aronson, MC；刘景.(2012).From antiferromagnetic insulator to correlated metal in pressurized and doped LaMnPO.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,109(27),E1815-E1819. |
| MLA | Simonson, JW,et al."From antiferromagnetic insulator to correlated metal in pressurized and doped LaMnPO".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 109.27(2012):E1815-E1819. |
入库方式： OAI收割
来源：高能物理研究所
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