Magnetic Control of Paired Exciton Vortices in TMD Heterobilayers.
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| Title: | Magnetic Control of Paired Exciton Vortices in TMD Heterobilayers. |
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| Authors: | Chen, Yingda1,2 (AUTHOR) chenyd@tzc.edu.cn, Cai, Yongyong3 (AUTHOR), Han, Yibo4 (AUTHOR), Chen, Jigen1 (AUTHOR) kiddchen@126.com, Lou, Wenkai2 (AUTHOR) wklou@semi.ac.cn |
| Source: | Chinese Physics Letters. 2026, Vol. 43 Issue 7, p1-8. 8p. |
| Subjects: | Zeeman effect, Exciton theory, Spin-orbit interactions, Magnetic control, Gross-Pitaevskii equations |
| Abstract: | Rashba-enabled paired exciton vortices provide a promising platform for programmable phase textures in van der Waals excitonic devices. Here, we develop a predictive analytic onset theory for accessing paired bright–dark interlayer-exciton vortices in a finite MoS2/WSe2 disk under a perpendicular magnetic field. The field tunes the bright–dark detuning Δbd(B) = E b(B) − E d(B) through Zeeman effect, thereby driving the system into or out of the vortex-access regime. Rashba spin-orbit coupling supplies the angular-momentum-changing bright–dark mixing required for vortex formation, and projection onto the lowest vortex-active disk doublet yields a mass-resolved square-root entry threshold incorporating a finite-size confinement floor and a weak detuning-sign asymmetry. Full-disk diagonalization further reveals that the paired-vortex doublet remains spectrally isolated from the nonvortex single-mode sector only within a detuning-dependent spinor-core window associated with a finite-temperature coherence bound. Driven-dissipative complex Gross–Pitaevskii simulations demonstrate that this selected doublet survives under pump, loss, and interactions as a robust nonlinear attractor. Together, the analytic, spectral, thermal, and dynamical criteria establish magnetic control of Δbd(B) as a practical route for accessing and stabilizing paired-vortex condensates in finite excitonic devices. [ABSTRACT FROM AUTHOR] |
| Copyright of Chinese Physics Letters is the property of IOP Publishing 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 |
| FullText | Text: Availability: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Magnetic Control of Paired Exciton Vortices in TMD Heterobilayers. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Chen%2C+Yingda%22">Chen, Yingda</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> chenyd@tzc.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Cai%2C+Yongyong%22">Cai, Yongyong</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Han%2C+Yibo%22">Han, Yibo</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Jigen%22">Chen, Jigen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> kiddchen@126.com</i><br /><searchLink fieldCode="AR" term="%22Lou%2C+Wenkai%22">Lou, Wenkai</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> wklou@semi.ac.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Chinese+Physics+Letters%22">Chinese Physics Letters</searchLink>. 2026, Vol. 43 Issue 7, p1-8. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Zeeman+effect%22">Zeeman effect</searchLink><br /><searchLink fieldCode="DE" term="%22Exciton+theory%22">Exciton theory</searchLink><br /><searchLink fieldCode="DE" term="%22Spin-orbit+interactions%22">Spin-orbit interactions</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+control%22">Magnetic control</searchLink><br /><searchLink fieldCode="DE" term="%22Gross-Pitaevskii+equations%22">Gross-Pitaevskii equations</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Rashba-enabled paired exciton vortices provide a promising platform for programmable phase textures in van der Waals excitonic devices. Here, we develop a predictive analytic onset theory for accessing paired bright–dark interlayer-exciton vortices in a finite MoS2/WSe2 disk under a perpendicular magnetic field. The field tunes the bright–dark detuning Δbd(B) = E b(B) − E d(B) through Zeeman effect, thereby driving the system into or out of the vortex-access regime. Rashba spin-orbit coupling supplies the angular-momentum-changing bright–dark mixing required for vortex formation, and projection onto the lowest vortex-active disk doublet yields a mass-resolved square-root entry threshold incorporating a finite-size confinement floor and a weak detuning-sign asymmetry. Full-disk diagonalization further reveals that the paired-vortex doublet remains spectrally isolated from the nonvortex single-mode sector only within a detuning-dependent spinor-core window associated with a finite-temperature coherence bound. Driven-dissipative complex Gross–Pitaevskii simulations demonstrate that this selected doublet survives under pump, loss, and interactions as a robust nonlinear attractor. Together, the analytic, spectral, thermal, and dynamical criteria establish magnetic control of Δbd(B) as a practical route for accessing and stabilizing paired-vortex condensates in finite excitonic devices. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Chinese Physics Letters is the property of IOP Publishing 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: 10.1088/0256-307X/43/7/070709 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 1 Subjects: – SubjectFull: Zeeman effect Type: general – SubjectFull: Exciton theory Type: general – SubjectFull: Spin-orbit interactions Type: general – SubjectFull: Magnetic control Type: general – SubjectFull: Gross-Pitaevskii equations Type: general Titles: – TitleFull: Magnetic Control of Paired Exciton Vortices in TMD Heterobilayers. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Chen, Yingda – PersonEntity: Name: NameFull: Cai, Yongyong – PersonEntity: Name: NameFull: Han, Yibo – PersonEntity: Name: NameFull: Chen, Jigen – PersonEntity: Name: NameFull: Lou, Wenkai IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: 2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 0256307X Numbering: – Type: volume Value: 43 – Type: issue Value: 7 Titles: – TitleFull: Chinese Physics Letters Type: main |
| ResultId | 1 |
