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Electrically tunable nonadiabatic quantum spin pumping in zigzag/bearded graphene nanoribbons.

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Title: Electrically tunable nonadiabatic quantum spin pumping in zigzag/bearded graphene nanoribbons.
Authors: Zhang, Yingran1 (AUTHOR), Yu, Jiaming2 (AUTHOR), Ren, Chongdan3 (AUTHOR), Tian, Hongyu1 (AUTHOR) tianhongyu@lyu.edu.cn, Xue, Liang4 (AUTHOR) ism_xuel@ujn.edu.cn, Hu, Jingguo5 (AUTHOR), Wang, Sake6 (AUTHOR) IsaacWang@jit.edu.cn
Source: Journal of Vacuum Science & Technology: Part A-Vacuums, Surfaces & Films. Mar2025, Vol. 43 Issue 2, p1-9. 9p.
Subjects: Spin polarization, Spintronics, Magnetic insulators, Nanoribbons, Quantum information science
Abstract: We theoretically investigate nonadiabatic quantum spin pumping in zigzag/bearded graphene nanoribbons, in which two bearded graphene nanoribbon regions are deposited by local ferromagnetic insulators to induce spin splitting. We show that spin-polarized currents, spin separation, and even pure spin pumping can be achieved by tuning the driving frequency and the magnetization orientations of the two ferromagnetic insulators. Meanwhile, for the two ferromagnetic insulators with antiparallel/parallel magnetization orientation, the left and right electrodes can simultaneously generate an equal amount of pumped currents with opposite/same spin polarization. Moreover, in the two-parameter spin pumping regime, the flowing directions of the pumped currents can be tuned by the phase difference. This suggests a useful method for manipulating and separating spin in graphene nanoribbons, which is important for spintronic applications. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Vacuum Science & Technology: Part A-Vacuums, Surfaces & Films is the property of American Institute of Physics 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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DbLabel: Engineering Source
An: 183538213
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Electrically tunable nonadiabatic quantum spin pumping in zigzag/bearded graphene nanoribbons.
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  Data: <searchLink fieldCode="AR" term="%22Zhang%2C+Yingran%22">Zhang, Yingran</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yu%2C+Jiaming%22">Yu, Jiaming</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ren%2C+Chongdan%22">Ren, Chongdan</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tian%2C+Hongyu%22">Tian, Hongyu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tianhongyu@lyu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Xue%2C+Liang%22">Xue, Liang</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> ism_xuel@ujn.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Hu%2C+Jingguo%22">Hu, Jingguo</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Sake%22">Wang, Sake</searchLink><relatesTo>6</relatesTo> (AUTHOR)<i> IsaacWang@jit.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Vacuum+Science+%26+Technology%3A+Part+A-Vacuums%2C+Surfaces+%26+Films%22">Journal of Vacuum Science & Technology: Part A-Vacuums, Surfaces & Films</searchLink>. Mar2025, Vol. 43 Issue 2, p1-9. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Spin+polarization%22">Spin polarization</searchLink><br /><searchLink fieldCode="DE" term="%22Spintronics%22">Spintronics</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+insulators%22">Magnetic insulators</searchLink><br /><searchLink fieldCode="DE" term="%22Nanoribbons%22">Nanoribbons</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+information+science%22">Quantum information science</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: We theoretically investigate nonadiabatic quantum spin pumping in zigzag/bearded graphene nanoribbons, in which two bearded graphene nanoribbon regions are deposited by local ferromagnetic insulators to induce spin splitting. We show that spin-polarized currents, spin separation, and even pure spin pumping can be achieved by tuning the driving frequency and the magnetization orientations of the two ferromagnetic insulators. Meanwhile, for the two ferromagnetic insulators with antiparallel/parallel magnetization orientation, the left and right electrodes can simultaneously generate an equal amount of pumped currents with opposite/same spin polarization. Moreover, in the two-parameter spin pumping regime, the flowing directions of the pumped currents can be tuned by the phase difference. This suggests a useful method for manipulating and separating spin in graphene nanoribbons, which is important for spintronic applications. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Vacuum Science & Technology: Part A-Vacuums, Surfaces & Films is the property of American Institute of Physics 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:
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      – Type: doi
        Value: 10.1116/6.0004262
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 9
        StartPage: 1
    Subjects:
      – SubjectFull: Spin polarization
        Type: general
      – SubjectFull: Spintronics
        Type: general
      – SubjectFull: Magnetic insulators
        Type: general
      – SubjectFull: Nanoribbons
        Type: general
      – SubjectFull: Quantum information science
        Type: general
    Titles:
      – TitleFull: Electrically tunable nonadiabatic quantum spin pumping in zigzag/bearded graphene nanoribbons.
        Type: main
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          Name:
            NameFull: Zhang, Yingran
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            NameFull: Yu, Jiaming
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            NameFull: Ren, Chongdan
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            NameFull: Tian, Hongyu
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            NameFull: Xue, Liang
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            NameFull: Hu, Jingguo
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            NameFull: Wang, Sake
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            – D: 01
              M: 03
              Text: Mar2025
              Type: published
              Y: 2025
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              Value: 43
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            – TitleFull: Journal of Vacuum Science & Technology: Part A-Vacuums, Surfaces & Films
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