|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ИНХС РАН |
||
Persistent spin texture in ferroelectric Hf0.5Zr0.5O2статья
Дата последнего поиска статьи во внешних источниках: 10 апреля 2024 г.
- Авторы: Li Huinan, Chen Xu, Zhang Qin, Dou Mingbo, Yu Yue, Zhuravlev M.Ye, Nikolaev A.V., Wang Xianjie, Tao L.L.
- Журнал: Applied Physics Letters
- Том: 124
- Номер: 12
- Год издания: 2024
- Издательство: AIP Publishing
- Местоположение издательства: United States
- Первая страница: 122903-1
- Последняя страница: 122903-6
- Номер статьи: 122903
- DOI: 10.1063/5.0197098
- Аннотация: Persistent spin texture (PST) refers to the unidirectional spin configuration in momentum space and preserves the SU(2) spin rotationsymmetry, which protects the spin coherence against the relaxation and renders an ultimately infinite spin lifetime. In this regard, it would be desirable to find high-quality quantum materials sustaining the intrinsic PST. Here, based on density-functional theory calculations, we show that the ferroelectric Hf0.5Zr0.5O2 sustains a PST over large area of Brillouin zone around the conduction band minimum, while the Rashba type spin texture dominates around the valence band maximum. Based on the group theoretical analysis, we construct an effective kpHamiltonian model and demonstrate that the PST arises from the significant anisotropy of spin splitting, which pins the spin–orbit field tocertain direction. In addition, we elucidate the spin SU(2) symmetry for the discovered PST. Given the fact that Hf0.5Zr0.5O2 is compatiblewith silicon semiconductor technologies, our work discovers a high-quality oxide material sustaining the PST, which holds great promise forspin-orbitronic applications.
- Добавил в систему: Николаев Александр Васильевич