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Persistent spin texture enforced by symmetry

Author

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  • L. L. Tao

    (University of Nebraska)

  • Evgeny Y. Tsymbal

    (University of Nebraska)

Abstract

Persistent spin texture (PST) is the property of some materials to maintain a uniform spin configuration in the momentum space. This property has been predicted to support an extraordinarily long spin lifetime of carriers promising for spintronics applications. Here, we predict that there exists a class of noncentrosymmetric bulk materials, where the PST is enforced by the nonsymmorphic space group symmetry of the crystal. Around certain high symmetry points in the Brillouin zone, the sublattice degrees of freedom impose a constraint on the effective spin–orbit field, which orientation remains independent of the momentum and thus maintains the PST. We illustrate this behavior using density-functional theory calculations for a handful of promising candidates accessible experimentally. Among them is the ferroelectric oxide BiInO3—a wide band gap semiconductor which sustains a PST around the conduction band minimum. Our results broaden the range of materials that can be employed in spintronics.

Suggested Citation

  • L. L. Tao & Evgeny Y. Tsymbal, 2018. "Persistent spin texture enforced by symmetry," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05137-0
    DOI: 10.1038/s41467-018-05137-0
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    Cited by:

    1. Gautam Gurung & Mohamed Elekhtiar & Qing-Qing Luo & Ding-Fu Shao & Evgeny Y. Tsymbal, 2024. "Nearly perfect spin polarization of noncollinear antiferromagnets," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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