G-type antiferromagnetic structure in Rb1-xV2Te2O

Wu Xie (1; 2); Changchao Liu (3); Fayuan Zhang (4); Zhenhong Tan (1; 2); Wenhai Ji (1; 2); Nan Zhao (1; 2); Lingxiang Bao (1; 2); Dong Zhang (1; 2); Feiran Shen (1; 2); Lunhua He (1; 5); Hao Wang (1; 2); Rong Du (1; 2); Guanghan Cao (3); Chaoyu Chen (6); and Ping Miao (1; 2) ((1) Spallation Neutron Source Science Center; Dongguan; P. R. China (2) Institute of High Energy Physics; Chinese Academy of Sciences; Beijing; P. R. China (3) School of Physics; Zhejiang University; Hangzhou; China (4) Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area; Shenzhen; China (5) Beijing National Laboratory for Condensed Matter Physics; Institute of Physics; Chinese Academy of Sciences; Beijing; China (6) Songshan Lake Materials Laboratory; Dongguan; China)

arXiv:2604.17365·cond-mat.mtrl-sci·April 23, 2026

G-type antiferromagnetic structure in Rb1-xV2Te2O

Wu Xie (1, 2), Changchao Liu (3), Fayuan Zhang (4), Zhenhong Tan (1, 2), Wenhai Ji (1, 2), Nan Zhao (1, 2), Lingxiang Bao (1, 2), Dong Zhang (1, 2), Feiran Shen (1, 2), Lunhua He (1, 5), Hao Wang (1, 2), Rong Du (1, 2), Guanghan Cao (3), Chaoyu Chen (6), and Ping Miao (1

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TL;DR

This study reveals a G-type antiferromagnetic structure in Rb1-xV2Te2O below 337 K, providing new insights into its altermagnetic properties and challenging previous theoretical predictions.

Contribution

The paper reports neutron diffraction evidence of a G-type antiferromagnetic structure in Rb1-xV2Te2O, contrasting earlier theoretical expectations and advancing understanding of this altermagnet candidate.

Findings

01

Identified G-type antiferromagnetic order below 337 K.

02

Contradicted previous theoretical predictions.

03

Enhanced understanding of Rb1-xV2Te2O's magnetic structure.

Abstract

Altermagnetism, known for its non-relativistic spin-split band structures with yet compensated moments, is being intensively investigated. Discovering new altermagnetic materials with characteristics suitable for practical use remains an important ongoing task. Recently a metallic room-temperature altermagnet candidate Rb1-xV2Te2O with a layered structure and d-wave spin symmetry has been reported based on experimental results from the spin-resolved photoemission spectroscopy and scanning tunnelling microscopy/spectroscopy (STM/STS) measurements. Here we report neutron powder diffraction (NPD) investigations on the magnetic structure of Rb1-xV2Te2O, which shows a G-type antiferromagnetic structure below the transition temperature of 337 K. The result is different from the original theoretical expectation, which might lead to new insights on the physics of this altermagnet candidate.

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