Quasi-1D van der Waals Antiferromagnetic CrZr 4 Te 14 with Large In-Plane Anisotropic Negative Magnetoresistance.
Yuqiang FangKe YangEnze ZhangShanshan LiuZehao JiaYuda ZhangHua WuFaxian XiuFuqiang HuangPublished in: Advanced materials (Deerfield Beach, Fla.) (2022)
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 CrZr 4 Te 14 is successfully synthesized. Owing to the existence of 1D [CrTe 2 ] and [ZrTe 3 ] chains along the b-axis, CrZr 4 Te 14 crystals show strong anisotropy of phonon vibrations, electrical transport, and magnetism. Density functional theory calculations reveal the ferromagnetic (FM) coupling within the [CrTe 2 ] 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 CrZr 4 Te 14 device. The 1D FM chains and anisotropic nMR effect make CrZr 4 Te 14 an interesting platform for exploring novel polarization-sensitive spintronics.
Keyphrases
- density functional theory
- solid state
- magnetic resonance
- high resolution
- molecular dynamics
- room temperature
- high throughput
- small molecule
- molecularly imprinted
- finite element
- atrial fibrillation
- gene expression
- molecular dynamics simulations
- single cell
- mass spectrometry
- highly efficient
- ionic liquid
- simultaneous determination
- perovskite solar cells