https://door.donau-uni.ac.at/o:5928 Spin-orbit-torque-enabled three-dimensional magnetic field sensor with low offset and high sensitivity Zeilinger, Sebastian Sebastian Zeilinger 0009-0006-7861-184X University of Vienna Güttinger, Johannes Johannes Güttinger University of Vienna Satz, Armin Armin Satz 0000-0001-9185-4586 University of Vienna Brückl, Hubert Hubert Brückl 0000-0002-5661-4189 University for Continuing Education Krems et al. American Physical Society journal article eng In this work we demonstrate a spin-orbit-torque (SOT) magnetic field sensor, designed as a Ta/Co FeB/MgO structure, with high sensitivity and capable of active offset compensation in all three spatial directions. This is described and verified in experiment and simulation. The measurements of magnetic fields showed an offset of 35, 42, and 3 μT for 𝑥-, 𝑦-, and 𝑧-fields respectively. Furthermore, the sensitivities of these measurements had values of 590, 580, and 490 VA−1 T−1 in the 𝑥-, 𝑦-, and 𝑧-direction, respectively. In addition, the robustness to bias fields is demonstrated via experiments and single-spin simulations by applying bias fields in the 𝑦-direction. Cross sensitivities were further analyzed via single-spin simulations, performing a parameter sweep of different bias fields in the 𝑦- and 𝑧-direction up to ±1 mT. The extraction of the SOT parameters 𝜂DL and 𝜂FL is shown via an optimization of a single-spin curve to the experimental measurements. Magnetism Spin-orbit torque Spintronics Magnetic systems http://creativecommons.org/licenses/by/4.0/ https://door.donau-uni.ac.at/api/object/o:5928/download 10.1103/997y-hk7m application/pdf Physical Review Applied Physical Review Applied 24 1.76 MB 2025-12-11