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Spin Hall effect in monolayer black phosphorus.

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Title: Spin Hall effect in monolayer black phosphorus.
Authors: Zhao, Yiqing1 (AUTHOR), Zhou, Xiaoying1 (AUTHOR) xyzhou@hnust.edu.cn
Source: European Physical Journal B: Condensed Matter. May2026, Vol. 99 Issue 5, p1-5. 5p.
Subjects: Spin Hall effect, Spintronics, Phosphorene, Band gaps, Nanoelectronics, Anisotropy, Curvature, Charge carrier mobility
Abstract: Monolayer black phosphorus (BP), characterized by its direct band gap, high carrier mobility, and pronounced in-plane anisotropy, offers a versatile platform for next-generation nanoelectronic devices. Despite the symmetry-enforced vanishing Berry curvature due to the coexistence of inversion and time-reversal symmetries, we demonstrate that monolayer BP hosts a spin-resolved Berry curvature that drives the intrinsic spin Hall effect. Using a four-band k · p Hamiltonian, we analytically derive the spin-resolved Berry curvature and the orbital magnetic moment. Both quantities peak at the Γ point and exhibit significant anisotropy, decaying more rapidly along the k y direction than the k x direction. Furthermore, the spin Hall conductivity displays a plateau within the band gap that remains robust against temperature fluctuations due to BP's large energy gap. Finally, we identify a finite circular polarization along the k x direction as a potential experimental signature for detecting this spin-resolved Berry curvature. Our results establish monolayer BP as a promising candidate for spintronics. [ABSTRACT FROM AUTHOR]
Copyright of European Physical Journal B: Condensed Matter is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 194640310
AccessLevel: 6
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PubTypeId: academicJournal
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  Data: Spin Hall effect in monolayer black phosphorus.
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  Data: <searchLink fieldCode="AR" term="%22Zhao%2C+Yiqing%22">Zhao, Yiqing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Xiaoying%22">Zhou, Xiaoying</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> xyzhou@hnust.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22European+Physical+Journal+B%3A+Condensed+Matter%22">European Physical Journal B: Condensed Matter</searchLink>. May2026, Vol. 99 Issue 5, p1-5. 5p.
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  Data: <searchLink fieldCode="DE" term="%22Spin+Hall+effect%22">Spin Hall effect</searchLink><br /><searchLink fieldCode="DE" term="%22Spintronics%22">Spintronics</searchLink><br /><searchLink fieldCode="DE" term="%22Phosphorene%22">Phosphorene</searchLink><br /><searchLink fieldCode="DE" term="%22Band+gaps%22">Band gaps</searchLink><br /><searchLink fieldCode="DE" term="%22Nanoelectronics%22">Nanoelectronics</searchLink><br /><searchLink fieldCode="DE" term="%22Anisotropy%22">Anisotropy</searchLink><br /><searchLink fieldCode="DE" term="%22Curvature%22">Curvature</searchLink><br /><searchLink fieldCode="DE" term="%22Charge+carrier+mobility%22">Charge carrier mobility</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Monolayer black phosphorus (BP), characterized by its direct band gap, high carrier mobility, and pronounced in-plane anisotropy, offers a versatile platform for next-generation nanoelectronic devices. Despite the symmetry-enforced vanishing Berry curvature due to the coexistence of inversion and time-reversal symmetries, we demonstrate that monolayer BP hosts a spin-resolved Berry curvature that drives the intrinsic spin Hall effect. Using a four-band k · p Hamiltonian, we analytically derive the spin-resolved Berry curvature and the orbital magnetic moment. Both quantities peak at the Γ point and exhibit significant anisotropy, decaying more rapidly along the k y direction than the k x direction. Furthermore, the spin Hall conductivity displays a plateau within the band gap that remains robust against temperature fluctuations due to BP's large energy gap. Finally, we identify a finite circular polarization along the k x direction as a potential experimental signature for detecting this spin-resolved Berry curvature. Our results establish monolayer BP as a promising candidate for spintronics. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of European Physical Journal B: Condensed Matter is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1140/epjb/s10051-026-01174-7
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 5
        StartPage: 1
    Subjects:
      – SubjectFull: Spin Hall effect
        Type: general
      – SubjectFull: Spintronics
        Type: general
      – SubjectFull: Phosphorene
        Type: general
      – SubjectFull: Band gaps
        Type: general
      – SubjectFull: Nanoelectronics
        Type: general
      – SubjectFull: Anisotropy
        Type: general
      – SubjectFull: Curvature
        Type: general
      – SubjectFull: Charge carrier mobility
        Type: general
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      – TitleFull: Spin Hall effect in monolayer black phosphorus.
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            NameFull: Zhao, Yiqing
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            NameFull: Zhou, Xiaoying
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            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
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              Value: 99
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              Value: 5
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            – TitleFull: European Physical Journal B: Condensed Matter
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