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  • Letter
  • Open Access

G-type antiferromagnetic ordering with strong anisotropic exchange interactions in SrIr0.8Sn0.2O3

Xiang Li1, Xiaoting Li2,*, Jiaqi Lin3, Zahirul Islam4, Mary H. Upton4, Vivek Thampy5, Yifan Jiang1, Yuan Wan6, Haizhong Guo7,8,† et al.

Xuerong Liu1,2,‡

  • *Contact author: lixt4@shanghaitech.edu.cn
  • †Contact author: hguo@zzu.edu.cn
  • ‡Contact author: liuxr@shanghaitech.edu.cn
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Phys. Rev. Research 7, L042044 – Published 26 November, 2025

DOI: https://doi.org/10.1103/bcp9-zg8f

Abstract

Isovalent substitution of Ir4+ with Sn4+ in perovskite SrIrO3 induces a metal-insulator transition accompanied with strong antiferromagnetic ordering. We performed resonant x-ray scattering to investigate the magnetism in SrIr0.8Sn0.2O3. The G-type antiferromagnetic ordering with spin pointing along c axis was fully determined by azimuth-dependent elastic scattering. Dynamical magnetic excitation spectra were measured with resonant inelastic x-ray scattering. Strong magnetic exchange interactions were observed with magnon dispersing up to ∼130meV, and the anisotropy drives a large ∼50meV gap. With these results, we discuss the paramagnetic semimetallic behavior of the undoped SrIrO3.

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Phys. Rev. Research 7, L042044– Published 26 November, 2025
  • Received 29 November 2024
  • Revised 23 February 2025
  • Accepted 30 September 2025
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