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Uniaxial stress tuning of the anomalous Hall effect in Mn3Ge

G. A. Lombardi1,2,3, L. O. Kutelak2,3, M. M. Piva1, V. E. S. Frehse2,3,4, G. A. Calligaris2, K. Manna1,5, C. Felser1, R. D. dos Reis2,*, and M. Nicklas1,†

  • *Contact author: ricardo.reis@lnls.br
  • †Contact author: michael.nicklas@cpfs.mpg.de
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Phys. Rev. Materials 9, 104204 – Published 24 October, 2025

DOI: https://doi.org/10.1103/k1c5-cs6g

Abstract

Tunable electronic properties in magnetic materials lead to novel physical phenomena that have the potential to be exploited in the design of new spintronic devices. Here, we report the effect of uniaxial stress on the anomalous Hall effect (AHE) in the hexagonal frustrated antiferromagnetic Heusler compound Mn3Ge. Our x-ray diffraction results show that the c/a ratio varies linearly with strain when stress is applied along the a axis, as well as a significantly higher Young's modulus along the c direction. The linear behavior of the c/a ratio under uniaxial stress mirrors that seen under hydrostatic pressure up to 1.8 GPa, but results in a characteristically different behavior of the AHE. Stress applied along the a axis induces a distortion in the ab plane, smoothing the abrupt jump in the AHE signal at zero magnetic field. In contrast, stress applied along the c axis has little effect, presumably due to the higher Young's modulus. We argue that this is due to pronounced changes in magnetic order.

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Corrections

13 February, 2026

Correction: A project number in the Acknowledgments contained a typographical error and has been fixed.

Article Text

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Outline

Information

Phys. Rev. Materials 9, 104204– Published 24 October, 2025
  • Received 7 April 2025
  • Accepted 24 September 2025
  • Corrected 13 February 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by Max Planck Society.

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