Intertwining of Magnetism and Charge Ordering in Kagome FeGe

Shao, Sen1; Yin, Jia-Xin2; Belopolski, Ilya3; You, Jing-Yang4; Hou, Tao1; Chen, Hongyu1; Jiang, Yuxiao5; Hossain, Md Shafayat5; Yahyavi, Mohammad1; Hsu, Chia-Hsiu1; Feng, Yuan Ping4; Bansil, Arun6; Hasan, M. Zahid5; Chang, Guoqing1

2023-05-15

10.1021/acsnano.3c00229

ACS NANO   影响因子和分区

1936-0851

1936-086X

Recent experiments report a chargedensity wave (CDW)in the antiferromagnetFeGe, but the nature of the charge ordering and the associated structuraldistortion remains elusive. We discuss the structural and electronicproperties of FeGe. Our proposed ground state phase accurately capturesatomic topographies acquired by scanning tunneling microscopy. Weshow that the 2 x 2 x 1 CDW likely results from the Fermisurface nesting of hexagonal-prism-shaped kagome states. FeGe is foundto exhibit distortions in the positions of the Ge atoms instead ofthe Fe atoms in the kagome layers. Using in-depth first-principlescalculations and analytical modeling, we demonstrate that this unconventionaldistortion is driven by the intertwining of magnetic exchange couplingand CDW interactions in this kagome material. The movement of Ge atomsfrom their pristine positions also enhances the magnetic moment ofthe Fe kagome layers. Our study indicates that magnetic kagome latticesprovide a material candidate for exploring the effects of strong electroniccorrelations on the ground state and their implications for transport,magnetic, and optical responses in materials.

kagome antiferromagnet charge density wave intertwined orders first-principlescalculations crystal structure electronic properties

SCI ; EI

英语

NI论文

其他

National Research Foundation, Singapore[NRF-NRFF13-2021-0010] ; Gordon and Betty Moore Foundation["GBMF4547","GBMF9461"] ; Ministry of Education, Singapore, under its MOE AcRF Tier 3 Award[MOE2018-T3-1-002] ; U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences[DE-SC0022216] ; National Energy Research Scientific Computing Center through DOE[DE-AC02-05CH11231]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:001006454600001

AMER CHEMICAL SOC

20232314187470

Antiferromagnetic materials ; Antiferromagnetism ; Atoms ; Charge density ; Charge density waves ; Crystal lattices ; Electronic properties ; Germanium alloys ; Ground state ; Iron ; Iron compounds ; Optical lattices ; Scanning tunneling microscopy

Iron:545.1 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Electricity: Basic Concepts and Phenomena:701.1 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Magnetic Materials:708.4 ; Laser Beam Interactions:744.8 ; Atomic and Molecular Physics:931.3 ; Crystal Lattice:933.1.1

Web of Science

1.Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Guangdong, Peoples R China
3.RIKEN Ctr Emergent Matter Sci CEMS, Wako, Saitama 3510198, Japan
4.Natl Univ Singapore, Dept Phys, Singapore 117551, Singapore
5.Princeton Univ, Dept Phys, Lab Topol Quantum Matter & Adv Spect B7, Princeton, NJ 08544 USA
6.Northeastern Univ, Dept Phys, Boston, MA 02115 USA

Shao, Sen,Yin, Jia-Xin,Belopolski, Ilya,et al. Intertwining of Magnetism and Charge Ordering in Kagome FeGe[J]. ACS NANO,2023,17(11):10164-10171.

Shao, Sen.,Yin, Jia-Xin.,Belopolski, Ilya.,You, Jing-Yang.,Hou, Tao.,...&Chang, Guoqing.(2023).Intertwining of Magnetism and Charge Ordering in Kagome FeGe.ACS NANO,17(11),10164-10171.

Shao, Sen,et al."Intertwining of Magnetism and Charge Ordering in Kagome FeGe".ACS NANO 17.11(2023):10164-10171.