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

Abstract

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.

Ferromagnetic and half-metallic phase transition by doping in a one-dimensional narrow-bandgap W6PCl17 semiconductor

“…In particular, a 1D CrSbSe 3 nanowire has been theoretically predicted to be an FM semiconductor with high Curie temperature, 29 which was confirmed by subsequent experimental study. 30 In addition, some quasi-1D van der Waals (vdW) materials, including CrZr 4 Te 14 , 31 Ba 2 FeS 3 , 32 Ba 9 Co 3 (Se 1− x S x ) 15 33 and La 3 MnAs 5 , 34 have also been reported to possess tunable magnetic properties. Previous theoretical studies showed that the itinerant ferromagnetism induced by carrier doping can also be achieved in 1D single-chain systems.…”

Doping-induced magnetism and magnetoelectric coupling in one-dimensional NbOCl3 and NbOBr3

“…Recently, 1D ferromagnetic semiconductor CrSbSe 3 with a high Curie temperature has been predicted in theory. 13 Also, some 1D materials have been successfully synthesized experimentally such as quasi-1D van der Waals antiferromagnetic CrZr 4 Te 14 , 14 the high pressure phase of antiferromagnet Ba 2 FeS 3 with 1D spin chain, 15 and the InSb-Mn nanowire with room-temperature ferromagnetism. 16 However, 1D magnetic materials are still very scarce and a few of them can be stabilized at the room temperature.…”

Two-Dimensional van der Waals Material PdPSe: Investigation on Electrical Transport

“…Nevertheless, discovering new materials and exploring their properties remain the backbone of materials science and engineering. Thus, the field of material design and discovering new types of low-dimensional materials retains its potential consistently. − …”