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Proximity-induced ferromagnetism and chemical reactivity in few-layer VSe2 heterostructures
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Vinai, G., Bigi, C., Rajan, A., Watson, M. D., Lee, T-L., Mazzola, F., Modesti, S., Barua, Sourabh, Ciomaga Hatnean, Monica, Balakrishnan, Geetha, King, P. D. C., Torelli, P., Rossi, G. and Panaccione, G. (2020) Proximity-induced ferromagnetism and chemical reactivity in few-layer VSe2 heterostructures. Physical Review B, 101 (3). 035404. doi:10.1103/PhysRevB.101.035404
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Official URL: http://dx.doi.org/10.1103/PhysRevB.101.035404
Abstract
Among transition-metal dichalcogenides, mono and few-layers thick VSe2 has gained much recent attention following claims of intrinsic room-temperature ferromagnetism in this system, which have nonetheless proved controversial. Here, we address the magnetic and chemical properties of Fe/VSe2 heterostructure by combining element sensitive x-ray absorption spectroscopy and photoemission spectroscopy. Our x-ray magnetic circular dichroism results confirm recent findings that both native mono/few-layer and bulk VSe2 do not show intrinsic ferromagnetic ordering. Nonetheless, we find that ferromagnetism can be induced, even at room temperature, after coupling with a Fe thin film layer, with antiparallel alignment of the moment on the V with respect to Fe. We further consider the chemical reactivity at the Fe/VSe2 interface and its relation with interfacial magnetic coupling.
| Item Type: | Journal Article | ||||||||||
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| Subjects: | Q Science > QC Physics | ||||||||||
| Divisions: | Faculty of Science > Physics | ||||||||||
| Library of Congress Subject Headings (LCSH): | Chemical reactors, Heterostructures -- Magnetic properties, Condensed matter -- Magnetic properties | ||||||||||
| Journal or Publication Title: | Physical Review B | ||||||||||
| Publisher: | American Physical Society | ||||||||||
| ISSN: | 2469-9950 | ||||||||||
| Official Date: | 15 January 2020 | ||||||||||
| Dates: |
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| Volume: | 101 | ||||||||||
| Number: | 3 | ||||||||||
| Article Number: | 035404 | ||||||||||
| DOI: | 10.1103/PhysRevB.101.035404 | ||||||||||
| Status: | Peer Reviewed | ||||||||||
| Publication Status: | Published | ||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||
| Copyright Holders: | ©2020 American Physical Society | ||||||||||
| RIOXX Funder/Project Grant: |
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