Large-moment antiferromagnetic order in overdoped high-T-c superconductor (SmFeAsO1-xDx)-Sm-154

Iimura Soshi; Okanishi Hiroshi; Matsuishi SatoruHiraka HaruhiroHonda TakashiIkeda KazutakaHansen Thomas C.Otomo ToshiyaHosono Hideo

首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America. >Large-moment antiferromagnetic order in overdoped high-T-c superconductor (SmFeAsO1-xDx)-Sm-154

【24h】

Large-moment antiferromagnetic order in overdoped high-T-c superconductor (SmFeAsO1-xDx)-Sm-154

机译：Large-moment antiferromagnetic order in overdoped high-T-c superconductor (SmFeAsO1-xDx)-Sm-154

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

In iron-based superconductors, high critical temperature (T-c) superconductivity over 50 K has only been accomplished in electron-doped hREFeAsO (hRE is heavy rare earth (RE) element). Although hREFeAsO has the highest bulk T-c (58 K), progress in understanding its physical properties has been relatively slow due to difficulties in achieving high-concentration electron doping and carrying out neutron experiments. Here, we present a systematic neutron powder diffraction study of (SmFeAsO1-xDx)-Sm-154, and the discovery of a long-range antiferromagnetic ordering with x >= 0.56 (AFM2) accompanying a structural transition from tetragonal to orthorhombic. Surprisingly, the Fe magnetic moment in AFM2 reaches a magnitude of 2.73 mu(B)/Fe, which is the largest in all nondoped iron pnictides and chalcogenides. Theoretical calculations suggest that the AFM2 phase originates in kinetic frustration of the Fe-3d(xy) orbital, in which the nearest-neighbor hopping parameter becomes zero. The unique phase diagram, i.e., highest-T-c superconducting phase adjacent to the strongly correlated phase in electron-overdoped regime, yields important clues to the unconventional origins of superconductivity.

著录项

来源
《Proceedings of the National Academy of Sciences of the United States of America.》 |2017年第22期|E4354-E4359|共6页
作者
Iimura Soshi; Okanishi Hiroshi; Matsuishi SatoruHiraka HaruhiroHonda TakashiIkeda KazutakaHansen Thomas C.Otomo ToshiyaHosono Hideo;
展开▼
作者单位

Tokyo Inst Technol, Lab Mat & Struct, Yokohama, Kanagawa 2268503, Japan;

Tokyo Inst Technol, Res Ctr Element Strategy, Yokohama, Kanagawa 2268503, Japan;

Ibaraki Univ, Grad Sch Sci & Engn, Mito, Ibaraki 3108512, JapanHigh Energy Accelerator Res Org, Inst Mat Struct Sci, Tsukuba, Ibaraki 3050801, JapanInst Laue Langevin, F-38042 Grenoble 9, France;

展开▼
收录信息美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类自然科学总论;
关键词
high-T-c superconductivity; neutron scattering; oxyhydrides; iron-based superconductors; antiferromagnetism;

Large-moment antiferromagnetic order in overdoped high-T-c superconductor (SmFeAsO1-xDx)-Sm-154

摘要

著录项

相关主题

期刊订阅