Nonlinear Hall resistance and temperature-dependent behavior in Pt/RuO<sub>2</sub> bilayer structures for high-precision temperature sensing applications
Abstract In this work, we report the experimentally observed nonlinear dependence of Hall resistance on current in a Pt/RuO 2 bilayer structures. Temperature-dependent measurements reveal that the Hall resistance is highly sensitive to temperature variations. The first-principles calculations suggest that the nonlinear dependence of Hall resistance on current may arise from changes in the Berry curvature induced by the electric field. Based on Pt/RuO 2 (101) films, we developed a temperature sensor with a wide range, high precision, and excellent reliability. This work provides strategies for temperature sensing and promotes the future application of Hall temperature sensors.
Authors
- Liqing Pan (ORCID: https://orcid.org/0000-0002-7868-2799)
- Yiman Liu (ORCID: https://orcid.org/0000-0002-2223-7223)
- Shuyan Gu (ORCID: https://orcid.org/0000-0002-2362-1251)
- Jie Jiang (ORCID: https://orcid.org/0000-0003-1452-1651)
- Gongwei Hu (ORCID: https://orcid.org/0000-0001-5349-5228)
- Zhan Gao (ORCID: https://orcid.org/0000-0001-6729-1189)
- Sixin Kang (ORCID: https://orcid.org/0009-0004-8006-5126)
- Jie Chen (ORCID: https://orcid.org/0000-0003-4599-3600)
- Min Liu (ORCID: https://orcid.org/0000-0002-4887-8854)
- Wentao Wang (ORCID: https://orcid.org/0009-0005-5415-2696)
Institutions
- China Three Gorges University (CN)
- Chinese Academy of Sciences (CN)
- Institute of Physics (CN)
Publication Details
- Journal
- Applied Physics Express
- Published
- 2025-03-26
- DOI
- https://doi.org/10.35848/1882-0786/adc5d9
- Primary Topic
- Magnetic Field Sensors Techniques
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China