A topological Hund nodal line antiferromagnet

Yang，Xian P.1; Yao，Yueh Ting2; Zheng，Pengyu3; Guan，Shuyue4; Zhou，Huibin4; Cochran，Tyler A.1; Lin，Che Min2; Yin，Jia Xin5; Zhou，Xiaoting6,7; Cheng，Zi Jia1; Li，Zhaohu8; Shi，Tong8; Hossain，Md Shafayat1; Chi，Shengwei8; Belopolski，Ilya1; Jiang，Yu Xiao1; Litskevich，Maksim1; Xu，Gang8,9,10; Tian，Zhaoming8; Bansil，Arun6,7; Yin，Zhiping3,11; Jia，Shuang4,12,13; Chang，Tay Rong2,14,15; Hasan，M. Zahid1,16,17

2024-12-01

10.1038/s41467-024-51255-3

Nature Communications   影响因子和分区

2041-1723

The interplay of topology, magnetism, and correlations gives rise to intriguing phases of matter. In this study, through state-of-the-art angle-resolved photoemission spectroscopy, density functional theory, and dynamical mean-field theory calculations, we visualize a fourfold degenerate Dirac nodal line at the boundary of the bulk Brillouin zone in the antiferromagnet YMnGe. We further demonstrate that this gapless, antiferromagnetic Dirac nodal line is enforced by the combination of magnetism, space-time inversion symmetry, and nonsymmorphic lattice symmetry. The corresponding drumhead surface states traverse the whole surface Brillouin zone. YMnGe thus serves as a platform to exhibit the interplay of multiple degenerate nodal physics and antiferromagnetism. Interestingly, the magnetic nodal line displays a d-orbital dependent renormalization along its trajectory in momentum space, thereby manifesting Hund’s coupling. Our findings offer insights into the effect of electronic correlations on magnetic Dirac nodal lines, leading to an antiferromagnetic Hund nodal line.

SCI

英语

其他

2-s2.0-85201406864

Scopus

1.Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7),Department of Physics,Princeton University,Princeton,United States
2.Department of Physics,National Cheng Kung University,Tainan,Taiwan
3.School of Physics & Astronomy and Center for Advanced Quantum Studies,Beijing Normal University,Beijing,China
4.International Center for Quantum Materials,School of Physics,Peking University,Beijing,China
5.Department of Physics,Southern University of Science and Technology,Shenzhen,Guangdong,China
6.Department of Physics,Northeastern University,Boston,United States
7.Quantum Materials and Sensing Institute,Northeastern University,Burlington,United States
8.School of Physics and Wuhan National High Magnetic Field Center,Huazhong University of Science and Technology,Wuhan,Hubei,China
9.Institute for Quantum Science and Engineering,Huazhong University of Science and Technology,Wuhan,Hubei,China
10.Wuhan Institute of Quantum Technology,Wuhan,Hubei,China
11.Key Laboratory of Multiscale Spin Physics (Ministry of Education),Beijing Normal University,Beijing,China
12.Interdisciplinary Institute of Light-Element Quantum Materials and Research Center for Light-Element Advanced Materials,Peking University,Beijing,China
13.CAS Center for Excellence in Topological Quantum Computation,University of Chinese Academy of Sciences,Beijing,China
14.Center for Quantum Frontiers of Research and Technology (QFort),Tainan,Taiwan
15.Physics Division,National Center for Theoretical Sciences,Taipei,Taiwan
16.Princeton Institute for Science and Technology of Materials,Princeton University,Princeton,United States
17.Lawrence Berkeley National Laboratory,Berkeley,United States

Yang，Xian P.,Yao，Yueh Ting,Zheng，Pengyu,et al. A topological Hund nodal line antiferromagnet[J]. Nature Communications,2024,15(1).

Yang，Xian P..,Yao，Yueh Ting.,Zheng，Pengyu.,Guan，Shuyue.,Zhou，Huibin.,...&Hasan，M. Zahid.(2024).A topological Hund nodal line antiferromagnet.Nature Communications,15(1).

Yang，Xian P.,et al."A topological Hund nodal line antiferromagnet".Nature Communications 15.1(2024).