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Detecting slow magnetization relaxation via magnetotransport measurements based on the current-reversal method

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2025

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Beckert, Sebastian
Badura, Antonin
LeiviskÀ, Miina
Kriegner, Dominik
Scheffler, Daniel
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Deutsche Forschungsgemeinschaft (DFG): 445976410
Deutsche Forschungsgemeinschaft (DFG): 490730630
Deutsche Forschungsgemeinschaft (DFG): 425217212

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Physical Review B. American Physical Society (APS). 2025, 111(1), 014441. ISSN 2469-9950. eISSN 2469-9969. VerfĂŒgbar unter: doi: 10.1103/physrevb.111.014441

Zusammenfassung

Slow magnetization relaxation processes are an important time-dependent property of many magnetic materials. We show that magnetotransport measurements based on a well-established current-reversal method can be utilized to implement a simple and robust screening scheme for such relaxation processes. We demonstrate our approach considering the anomalous Hall effect in a Pt/Co/AlOđ‘„ trilayer model system, and then explore relaxation in 𝜏−MnAl films. Compared to magnetotransport experiments based on ac lock-in techniques, we find that the dc current-reversal method is particularly sensitive to relaxation processes which happen on timescales on the order of few to many seconds.

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ISO 690BECKERT, Sebastian, Richard SCHLITZ, Gregor SKOBJIN, Antonin BADURA, Miina LEIVISKÄ, Dominik KRIEGNER, Daniel SCHEFFLER, Nadine NABBEN, Xianyue AI, Sebastian T. B. GOENNENWEIN, 2025. Detecting slow magnetization relaxation via magnetotransport measurements based on the current-reversal method. In: Physical Review B. American Physical Society (APS). 2025, 111(1), 014441. ISSN 2469-9950. eISSN 2469-9969. VerfĂŒgbar unter: doi: 10.1103/physrevb.111.014441
BibTex
@article{Beckert2025-01-27Detec-72169,
  title={Detecting slow magnetization relaxation via magnetotransport measurements based on the current-reversal method},
  year={2025},
  doi={10.1103/physrevb.111.014441},
  number={1},
  volume={111},
  issn={2469-9950},
  journal={Physical Review B},
  author={Beckert, Sebastian and Schlitz, Richard and Skobjin, Gregor and Badura, Antonin and LeiviskÀ, Miina and Kriegner, Dominik and Scheffler, Daniel and Nabben, Nadine and Ai, Xianyue and Goennenwein, Sebastian T. B.},
  note={Article Number: 014441}
}
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