Quasi-1D van der Waals Antiferromagnetic CrZr4Te14 with Large In-Plane Anisotropic Negative Magnetoresistance

被引：12

作者：

Fang, Yuqiang ^{[1
]}

Yang, Ke ^{[2
]}

Zhang, Enze ^{[3
,4
]}

Liu, Shanshan ^{[3
,4
]}

Jia, Zehao ^{[3
,4
,5
]}

Zhang, Yuda ^{[3
,4
,5
]}

Wu, Hua ^{[4
,5
,6
,7
]}

Xiu, Faxian ^{[3
,4
,5
,8
,9
]}

Huang, Fuqiang ^{[1
,10
]}

机构：

[1] Chinese Acad Sci, State Key Lab High Performance Ceram & Superfine, Shanghai Inst Ceram, Shanghai 200050, Peoples R China

[2] Univ Shanghai Sci & Technol, Coll Sci, Shanghai 200093, Peoples R China

[3] Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China

[4] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China

[5] Shanghai Qi Zhi Inst, Shanghai 200232, Peoples R China

[6] Fudan Univ, Lab Computat Phys Sci MOE, State Key Lab Surface Phys, Shanghai 200433, Peoples R China

[7] Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China

[8] Fudan Univ, Inst Nanoelect Devices & Quantum Comp, Shanghai 200433, Peoples R China

[9] Shanghai Res Ctr Quantum Sci, Shanghai 201315, Peoples R China

[10] Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China

来源：

ADVANCED MATERIALS | 2022年 / 34卷 / 24期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

2D van der Waals magnetic materials; CrZr; Te-4; (14); quasi-1D ferromagnetic CrTe; (2) chain; TEMPERATURE; DEPENDENCE;

D O I：

10.1002/adma.202200145

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The discovery of 2D van der Waals (vdW) magnetic materials is of great significance to explore intriguing 2D magnetic physics and develop innovative spintronic devices. In this work, a new quasi-1D vdW layered compound CrZr4Te14 is successfully synthesized. Owing to the existence of 1D [CrTe2] and [ZrTe3] chains along the b-axis, CrZr4Te14 crystals show strong anisotropy of phonon vibrations, electrical transport, and magnetism. Density functional theory calculations reveal the ferromagnetic (FM) coupling within the [CrTe2] chain, while the interchain and interlayer couplings are both weakly antiferromagnetic (AF). Notably, a large intrinsic negative magnetoresistance (nMR) of -56% is achieved at 2 K under 9 T, and the in-plane anisotropic factor of nMR can reach up to 8.2 in the CrZr4Te14 device. The 1D FM chains and anisotropic nMR effect make CrZr4Te14 an interesting platform for exploring novel polarization-sensitive spintronics.

引用

页数：9