First-principles calculations on candidate altermagnetic materials

ORAL

Abstract

Altermagnetism is an emerging field in which materials exhibit non-relativistic spin splitting reminiscent of ferromagnets, while their magnetic moments are ordered antiferromagnetically [1]. This phenomenon is a consequence of broken time-reversal symmetry and the separation between real-space and spin-space symmetry operations. Kagome systems display a range of intriguing properties, including charge density waves, superconductivity, strong correlation effects, and the recently proposed altermagnetism in CsCr3Sb5 [2]. We use density functional theory to explore non-relativistic spin-splitting in alternative kagome materials and determine the impact of electronic correlation on their magnetic or candidate altermagnetic states.

[1] L. Šmejkal, J. Sinova, and T. Jungwirth, Phys. Rev. X 12, 040501 (2022).

[2] C. Xu et al., Nature Commun. 16, 3114 (2025).

*C.M. and J.W.V. are supported by the U.S. Department of Energy (DOE), Office of Science under grant award number DE-SC0025748, DOE RENEW program. J.D.M. and S.B.L. acknowledge financial support from the NSF's Q-AMASE-i program (Award No. DMR-1906383) and from the Arkansas High Performance Computing Center (NSF Award No. OAC-2346752).

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Presenters

  • Cameron Morelli

    • Middle Tennessee State University

Authors

  • Cameron Morelli

    • Middle Tennessee State University

  • Jose D Mella

    • University of Arkansas

  • John W Villanova

    • Middle Tennessee State University

  • Salvador Barraza-Lopez

    • University of Arkansas