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Ghiasi, Talieh S. ; Petrosyan, Davit ; Ingla-Aynés, Josep ; Bras, Tristan ; Watanabe, Kenji ; Taniguchi, Takashi ; Mañas-Valero, Samuel ; Coronado, Eugenio ; Zollner, Klaus ; Fabian, Jaroslav ; Kim, Philip ; van der Zant, Herre S. J.

Quantum spin Hall effect in magnetic graphene

Ghiasi, Talieh S. , Petrosyan, Davit , Ingla-Aynés, Josep , Bras, Tristan , Watanabe, Kenji , Taniguchi, Takashi , Mañas-Valero, Samuel , Coronado, Eugenio , Zollner, Klaus , Fabian, Jaroslav , Kim, Philip und van der Zant, Herre S. J. (2025) Quantum spin Hall effect in magnetic graphene. Nature Communications 16, S. 5336.

Veröffentlichungsdatum dieses Volltextes: 20 Nov 2025 06:43
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.78180


Zusammenfassung

A promising approach to attain long-distance coherent spin propagation is accessing topological spin-polarized edge states in graphene. Achieving this without external magnetic fields necessitates engineering graphene band structure, obtainable through proximity effects in van der Waals heterostructures. In particular, proximity-induced staggered potentials and spin-orbit coupling are expected to ...

A promising approach to attain long-distance coherent spin propagation is accessing topological spin-polarized edge states in graphene. Achieving this without external magnetic fields necessitates engineering graphene band structure, obtainable through proximity effects in van der Waals heterostructures. In particular, proximity-induced staggered potentials and spin-orbit coupling are expected to form a topological bulk gap in graphene with gapless helical edge states that are robust against disorder. In this work, we detect the spin-polarized helical edge transport in graphene at zero external magnetic field, allowed by the proximity of an interlayer antiferromagnet, CrPS4. We show the coexistence of the quantum spin Hall (QSH) states and magnetism in graphene, where the induced spin-orbit and exchange couplings also give rise to a large anomalous Hall (AH) effect. The detection of the QSH states at zero external magnetic field, together with the AH signal that persists up to room temperature, opens the route for practical applications of magnetic graphene in quantum spintronic circuitries.



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Details

DokumentenartArtikel
Titel eines Journals oder einer ZeitschriftNature Communications
Verlag:Nature Publishing Group (NPG)
Band:16
Seitenbereich:S. 5336
Datum24 Juni 2025
InstitutionenPhysik > Institut für Theoretische Physik > Lehrstuhl Professor Richter > Arbeitsgruppe Jaroslav Fabian
Projekte
Gefördert von: Deutsche Forschungsgemeinschaft (DFG) (314695032)
Gefördert von: Deutsche Forschungsgemeinschaft (DFG) (422707584)
Identifikationsnummer
WertTyp
10.1038/s41467-025-60377-1DOI
Dewey-Dezimal-Klassifikation500 Naturwissenschaften und Mathematik > 530 Physik
StatusVeröffentlicht
BegutachtetJa, diese Version wurde begutachtet
An der Universität Regensburg entstandenZum Teil
URN der UB Regensburgurn:nbn:de:bvb:355-epub-781803
Dokumenten-ID78180

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