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Published on: June 9, 2023
Electron localization or delocalization in incommensurate helical magnets
Shu Tanaka1, Hosho Katsura, Naoto Nagaosa
1Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. shu-t@spin.phys.s.u-tokyo.ac.jp
Electronic states in helical magnets exhibit both extended and localized behavior along the helical axis. This behavior depends on orbital, wave number, and spin rotation, with potential for realization discussed.
Area of Science:
- Condensed matter physics
- Materials science
- Quantum mechanics
Background:
- Incommensurate helical magnets exhibit complex electronic properties.
- Understanding electron localization is crucial for materials design.
Purpose of the Study:
- To theoretically investigate electronic states in incommensurate helical magnets.
- To analyze the factors governing electron localization and delocalization.
Main Methods:
- Theoretical study of electronic states.
- Analysis within a multiband system incorporating relativistic spin-orbit interaction.
Main Results:
- Electronic wave functions display both extended and localized characteristics.
- Behavior is contingent upon orbital type, helical wave number, and spin rotation plane.
- Demonstrated dependence on specific material and system parameters.
Conclusions:
- Electron localization in helical magnets is a tunable phenomenon.
- Potential for realizing controlled localization in advanced materials.
- Highlights the interplay between spin-orbit interaction and electronic structure.
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