Magnetism and Optical Anisotropy in van der Waals Antiferromagnetic Insulator CrOCl

Zhang，Tianle1; Wang，Yimeng2; Li，Hexuan3,4; Zhong，Fang5; Shi，Jia6,7; Wu，Minghui8; Sun，Zhaoyang9; Shen，Wanfu9; Wei，Bin10; Hu，Weida5; Liu，Xinfeng6; Huang，Li8; Hu，Chunguang9; Wang，Zhongchang10; Jiang，Chengbao1; Yang，Shengxue1; Zhang，Qing Ming11,12; Qu，Zhe3

2019-10-22

10.1021/acsnano.9b04726

ACS Nano   影响因子和分区

1936-0851

1936-086X

van der Waals (vdW) magnetic insulators are of significance in both fundamental research and technological application, but most two-dimensional (2D) vdW magnetic systems are unstable and of high lattice symmetry. Stable 2D vdW magnetic insulators with anisotropic structure are needed to modulate the properties and unlock potential applications. Here we present a stable vdW antiferromagnetic material, CrOCl, with low-symmetry orthorhombic structure, and investigate systematically its magnetism, phase transition behavior, and optical anisotropy. Spin-phonon coupling effects are uncovered by the abnormal frequency shifts of Raman-active modes, suggesting the formation of a magnetic superstructure. The sizable abnormal change of interplanar spacing indicates the presence of a structural transition at around 27 K. Further in-plane vibrational, reflectional, and absorptional anisotropic properties are explored both experimentally and theoretically, revealing a highly polarization sensitive characteristic and linear dichroism in 2D CrOCl. Meanwhile, the particularly high polarization dependency of the second-harmonic generation and the nonlinear susceptibility of ∼2.24 × 10 m/V make it suitable in the field of polarization-dependent nonlinear optics. The findings on the intricate properties of 2D CrOCl lay foundations for future applications of low-symmetry vdW magnets in spin-dependent electronic and optoelectronic devices.

chromium oxide chloride in-plane anisotropy magnetic insulator magnetism two-dimensional

SCI ; EI

英语

NI期刊

其他

Major Program of Development Foundation of Hefei Center for Physical Science and Technology[2016FXZY001]

Chemistry ; Science & Technology - Other Topics ; Materials Science

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

WOS:000492801600045

AMER CHEMICAL SOC

20194107526905

Antiferromagnetism ; Chlorine compounds ; Chromium compounds ; Dichroism ; Magnetic anisotropy ; Magnetism ; Nonlinear optics ; Optical anisotropy ; Optoelectronic devices ; Polarization ; Two dimensional ; Van der Waals forces

Magnetism: Basic Concepts and Phenomena:701.2 ; Light, Optics and Optical Devices:741 ; Physical Chemistry:801.4

2-s2.0-85073056374

Scopus

1.School of Materials Science and EngineeringBeihang University,Beijing,100191,China
2.Department of PhysicsBeijing Key Laboratory of Optoelectronic Functional Materials and Micro-nano DevicesRenmin University of China,Beijing,100872,China
3.Anhui Key Laboratory of Condensed Matter Physics at Extreme ConditionsHigh Magnetic Field LaboratoryChinese Academy of Sciences,Hefei, Anhui,230031,China
4.University of Science and Technology of China,Hefei, Anhui,230026,China
5.State Key Laboratory of Infrared PhysicsShanghai Institute of Technical PhysicsChinese Academy of Sciences,Shanghai,200083,China
6.CAS Key Laboratory of Standardization and Measurement for NanotechnologyCAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology,Beijing,100190,China
7.University of Chinese Academy of Sciences,Shijingshan District, Beijing,19 A Yuquan Road,100049,China
8.Department of PhysicsSouthern University of Science and Technology,Shenzhen,518005,China
9.State Key Laboratory of Precision Measuring Technology and InstrumentsTianjin University,Tianjin,Weijin Road,CN-300072,China
10.Department of Quantum and Energy MaterialsInternational Iberian Nanotechnology Laboratory (INL),Braga,Avenida Mestre José Veiga s/n,4715-330,Portugal
11.National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of Sciences,Beijing,100190,China
12.School of Physical Science and TechnologyLanzhou University,Lanzhou,730000,China

Zhang，Tianle,Wang，Yimeng,Li，Hexuan,et al. Magnetism and Optical Anisotropy in van der Waals Antiferromagnetic Insulator CrOCl[J]. ACS Nano,2019,13(10):11353-11362.

Zhang，Tianle.,Wang，Yimeng.,Li，Hexuan.,Zhong，Fang.,Shi，Jia.,...&Qu，Zhe.(2019).Magnetism and Optical Anisotropy in van der Waals Antiferromagnetic Insulator CrOCl.ACS Nano,13(10),11353-11362.

Zhang，Tianle,et al."Magnetism and Optical Anisotropy in van der Waals Antiferromagnetic Insulator CrOCl".ACS Nano 13.10(2019):11353-11362.