DyOCl: A rare-earth based two-dimensional van der Waals material with strong magnetic anisotropy

Tian, Congkuan1,3,4; Pan, Feihao1; Wang, Le1; Ye, Dehua2; Sheng, Jieming5,6,7; Wang, Jinchen1; Liu, Juanjuan1; Huang, Jiale1; Zhang, Hongxia1; Xu, Daye1; Qin, Jianfei8; Hao, Lijie8; Xia, Yuanhua9,10; Li, Hao9,10; Tong, Xin5,6; Wu, Liusuo7; Chen, Jian-Hao3,4; Jia, Shuang3,4; Cheng, Peng1; Yang, Jianhui2; Zheng, Youqu2

2021-12-07

10.1103/PhysRevB.104.214410

PHYSICAL REVIEW B   影响因子和分区

2469-9950

2469-9969

Comparing with the widely known transitional metal based van der Waals (vdW) materials, rare-earth based ones are rarely explored in the research of intrinsic two-dimensional (2D) magnetism. In this work, we report the physical properties of DyOCl, a rare-earth based vdW magnetic insulator with a direct band gap of <^>5.72 eV. The magnetic order of bulk DyOCl is determined by neutron scattering as the A-type antiferromagnetic structure below the Neel temperature TN = 10 K. The large magnetic moment near 10.1 mu B/Dy lies parallel to the a-axis with strong uniaxial magnetic anisotropy. At 2 K, a moderate magnetic field (<^>2 T ) applied along the easy axis generates spin-flip transitions and polarizes DyOCl to a ferromagnetic state. Density functional theory calculations reveal an extremely large magnetic anisotropy energy (-5850 mu eV/Dy) for DyOCl, indicating the great potential to realize magnetism in the 2D limit. Furthermore, the mechanical exfoliation of bulk DyOCl single crystals down to seven layers is demonstrated. Our findings suggest DyOCl is a promising material playground to investigate 2D f-electron magnetism and spintronic applications at the nanoscale.

SCI ; EI

英语

其他

National Natural Science Foundation of China[12074426,11227906,12004426,12104255] ; Research Funds of Renmin University of China["20XNLG19","21XNLG20"]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000733420100001

AMER PHYSICAL SOC

20215111353382

Density functional theory ; Dysprosium compounds ; Energy gap ; Magnetic anisotropy ; Magnetic moments ; Neutron scattering ; Rare earths ; Van der Waals forces

Magnetism: Basic Concepts and Phenomena:701.2 ; Physical Chemistry:801.4 ; Inorganic Compounds:804.2 ; Probability Theory:922.1 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4

PHYSICS

Web of Science

1.Renmin Univ China, Dept Phys, Betjing Key Lab Optoelect Funct Mat & MicroNano D, Beijing 100872, Peoples R China
2.Quzhou Univ, Quzhou 32400, Zhejiang, Peoples R China
3.Peking Univ, Int Ctr Quantum Mat, Sch Phys, Beijing 100871, Peoples R China
4.Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China
5.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
6.Spallat Neutron Source Sci Ctr, Dongguan 523803, Peoples R China
7.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
8.China Inst Atom Energy, POB 275-30, Beijing 102413, Peoples R China
9.China Acad Engn Phys, Key Lab Neutron Phys, Mianyang 621999, Sichuan, Peoples R China
10.China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621999, Sichuan, Peoples R China

Tian, Congkuan,Pan, Feihao,Wang, Le,et al. DyOCl: A rare-earth based two-dimensional van der Waals material with strong magnetic anisotropy[J]. PHYSICAL REVIEW B,2021,104(21).

Tian, Congkuan.,Pan, Feihao.,Wang, Le.,Ye, Dehua.,Sheng, Jieming.,...&Zheng, Youqu.(2021).DyOCl: A rare-earth based two-dimensional van der Waals material with strong magnetic anisotropy.PHYSICAL REVIEW B,104(21).

Tian, Congkuan,et al."DyOCl: A rare-earth based two-dimensional van der Waals material with strong magnetic anisotropy".PHYSICAL REVIEW B 104.21(2021).