...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Superconductivity and Novel Magnetism >NMR Study on a Pnictide Superconductor LaFeAsO_(1-x)H_x in a H-Overdoped Regime: Revival of Antiferromagnetic Fluctuations
【24h】

NMR Study on a Pnictide Superconductor LaFeAsO_(1-x)H_x in a H-Overdoped Regime: Revival of Antiferromagnetic Fluctuations

机译：在H掺杂区中的超素LaFeAsO_（1-x）H_x的NMR研究：反铁磁涨落的复兴

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

An electron-doped high-T_c pnictide LaFeAsO_(1-x) H_x is recently known for having double superconducting (SC) domes in the phase diagram. We have performed nuclear magnetic resonance (NMR) measurements in an H-overdoped regime to investigate the second SC dome on a microscopic level. We unexpectedly discovered that the linewidths of both ~(75)As and ~1H spectra broaden at low temperatures for the 58 and 62.5% H-doped samples, indicating that the antiferromagnetic (AF) ordering returns in the heavily H-doped regime. The finding itself is rare because an excess carrier doping tends to cause Fermi-liquid behavior in strongly correlated electron systems. We demonstrate that the new AF ordering originates from the nesting between electron pockets.
机译：近来，已知电子掺杂的高T_c肽LaFeAsO_（1-x）H_x在相图中具有双超导（SC）圆顶。我们已经在H掺杂状态下进行了核磁共振（NMR）测量，以便在微观水平上研究第二个SC圆顶。我们出乎意料地发现，对于58和62.5％的H掺杂样品，〜（75）As和〜1H光谱的线宽在低温下都变宽，表明在重H掺杂状态下反铁磁（AF）有序返回。这一发现本身是罕见的，因为过量的载流子掺杂会在强相关的电子系统中引起费米液体行为。我们证明了新的AF排序源自电子口袋之间的嵌套。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号