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Low-temperature electron-electron interaction correction to the anomalous Hall effect in Fe3GaTe2single crystals
Yihui Dong1, Xiuming Long1, Xiaowei Lv2
1Materials Genome Institute, Institute for Quantum Science and Technology, Shanghai Engineering Research Center for Integrated Circuits and Advanced Display Materials, Shanghai University, Shanghai 200444, People's Republic of China.
Summary
Electron-electron interactions (EEI) impact resistivity in metals. This study shows EEI significantly affects the anomalous Hall effect (AHE) in Fe3GaTe2, challenging existing theories for magnetic materials.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Quantum Mechanics
Background:
- Electron-electron interactions (EEI) are known to influence low-temperature resistivity in metals and semimetals.
- The specific impact of EEI on the anomalous Hall effect (AHE) remains a topic of scientific debate.
- Van der Waals ferromagnetic materials offer a unique platform to study such phenomena.
Purpose of the Study:
- To investigate the influence of EEI on both longitudinal and anomalous Hall resistivities.
- To analyze these effects in high-quality single crystals of van der Waals ferromagnetic Fe3GaTe2.
- To compare experimental findings with existing EEI theories.
Main Methods:
- Experimental measurement of low-temperature longitudinal and anomalous Hall resistivities.
- Analysis of temperature dependence of resistivity.
- Comparison of experimental data with theoretical models for EEI corrections.
Main Results:
- Longitudinal resistivity in Fe3GaTe2 is consistent with established EEI theory.
- Anomalous Hall resistivity shows a deviation from the standard EEI theory.
- The rate of change of AH resistivity with temperature is 2.6 times greater than that of longitudinal resistivity.
Conclusions:
- EEI significantly impacts low-temperature anomalous Hall resistivity through intrinsic mechanisms in Fe3GaTe2.
- This finding contradicts the conventional view that EEI does not affect AHE in systems with mirror symmetry.
- The study opens new research directions for EEI in disordered magnetic materials.
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