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RESEARCH PRODUCT
Electrical control of 2D magnetism in bilayer CrI3
David CobdenGenevieve ClarkDavid MacneillPablo Jarillo-herreroNathan P. WilsonBevin HuangKyle L. SeylerWang YaoMichael A. McguireXiaodong XuEfrén Navarro-moratallaDahlia R. KleinDi Xiaosubject
Kerr effectMagnetismBiomedical EngineeringFOS: Physical sciencesBioengineering02 engineering and technology01 natural sciencesCondensed Matter::Materials ScienceElectric fieldMesoscale and Nanoscale Physics (cond-mat.mes-hall)0103 physical sciencesAntiferromagnetismGeneral Materials ScienceElectrical and Electronic Engineering010306 general physicsPhysicsCondensed Matter - Mesoscale and Nanoscale PhysicsSpintronicsCondensed matter physics021001 nanoscience & nanotechnologyCondensed Matter PhysicsAtomic and Molecular Physics and OpticsMagnetic fieldFerromagnetismMagnetCondensed Matter::Strongly Correlated Electrons0210 nano-technologydescription
The challenge of controlling magnetism using electric fields raises fundamental questions and addresses technological needs such as low-dissipation magnetic memory. The recently reported two-dimensional (2D) magnets provide a new system for studying this problem owing to their unique magnetic properties. For instance, bilayer chromium triiodide (CrI3) behaves as a layered antiferromagnet with a magnetic field-driven metamagnetic transition. Here, we demonstrate electrostatic gate control of magnetism in CrI3 bilayers, probed by magneto-optical Kerr effect (MOKE) microscopy. At fixed magnetic fields near the metamagnetic transition, we realize voltage-controlled switching between antiferromagnetic and ferromagnetic states. At zero magnetic field, we demonstrate a time-reversal pair of layered antiferromagnetic states which exhibit spin-layer locking, leading to a remarkable linear dependence of their MOKE signals on gate voltage with opposite slopes. Our results pave the way for exploring new magnetoelectric phenomena and van der Waals spintronics based on 2D materials.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-02-20 | Nature Nanotechnology |