...
首页> 外文期刊>Science Advances >Orbital-selective Kondo lattice and enigmatic f electrons emerging from inside the antiferromagnetic phase of a heavy fermion
【24h】

Orbital-selective Kondo lattice and enigmatic f electrons emerging from inside the antiferromagnetic phase of a heavy fermion

机译:从重费米子的反铁磁相内部出现的轨道选择性近藤晶格和神秘的f电子

获取原文
           

摘要

Novel electronic phenomena frequently form in heavy-fermions because of the mutual localized and itinerant nature of f -electrons. On the magnetically ordered side of the heavy-fermion phase diagram, f -moments are expected to be localized and decoupled from the Fermi surface. It remains ambiguous whether Kondo lattice can develop inside the magnetically ordered phase. Using spectroscopic imaging with scanning tunneling microscope, complemented by neutron scattering, x-ray absorption spectroscopy, and dynamical mean field theory, we probe the electronic states in antiferromagnetic USbsub2/sub. We visualize a large gap in the antiferromagnetic phase within which Kondo hybridization develops below ~80 K. Our calculations indicate the antiferromagnetism and Kondo lattice to reside predominantly on different f -orbitals, promoting orbital selectivity as a new conception into how these phenomena coexist in heavy-fermions. Finally, at 45 K, we find a novel first order–like transition through abrupt emergence of nontrivial 5 f -electronic states that may resemble the “hidden-order” phase of URusub2/subSisub2/sub.
机译:由于f电子的相互局限性和流动性,新的电子现象经常在重费米子中形成。在重费米子相图的磁有序侧,预计f矩会在费米表面上定位并解耦。 Kondo晶格能否在磁性有序相内部发展仍然是一个模糊的问题。利用扫描隧道显微镜的光谱成像,结合中子散射,x射线吸收光谱和动态平均场理论,我们研究了反铁磁USb 2 中的电子态。我们观察到反铁磁相中的一个大缺口,近藤杂交在其中发展到约80 K以下。我们的计算表明,反铁磁和近藤晶格主要位于不同的f轨道上,从而促进了轨道选择性,作为这些现象如何在重态共存的新概念-fermions。最终,在45 K处,我们发现了一个由非平凡的5 f电子态突然出现的新型一阶跃迁,该跃迁可能类似于URu 2 Si 2的“隐藏阶”相

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