Baerenfaenger, Jan and Zollner, Klaus and Cvitkovich, Lukas and Watanabe, Kenji and Taniguchi, Takashi and Hartl, Stefan and Fabian, Jaroslav and Eroms, Jonathan and Weiss, Dieter and Ciorga, Mariusz (2025) Highly efficient lateral spin valve device based on graphene/hBN/Fe3GeTe2. 2D MATERIALS, 12 (4): 045008. ISSN 2053-1583
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In this work we report efficient out-of-plane spin injection and detection in an all-van der Waals based heterostructure using only exfoliated 2D materials. We demonstrate spin injection by measuring spin-valve and Hanle signals in non-local transport in a stack of Fe3GeTe2 (FGT), hexagonal boron nitride (hBN) and graphene layers. FGT flakes form the spin aligning electrodes necessary to inject and detect spins in the graphene channel. The hBN tunnel barrier provides a high-quality interface between the ferromagnetic electrodes and graphene, eliminating the conductivity mismatch problem, thus ensuring efficient spin injection and detection with spin injection efficiencies of up to P = 40%. Our results demonstrate that FGT/hBN/graphene heterostructures form a promising platform for realizing 2D van der Waals spintronic devices.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | INJECTION; TRANSPORT; METAL; spin injection; 2D magnets; van der Waals heterostructures |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Jonathan Eroms |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 31 Mar 2026 05:13 |
| Last Modified: | 31 Mar 2026 05:13 |
| URI: | https://pred.uni-regensburg.de/id/eprint/66645 |
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