期刊
SCIENCE
卷 360, 期 6394, 页码 1218-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aar3617
关键词
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资金
- Center for Integrated Quantum Materials under NSF [DMR-1231319]
- Gordon and Betty Moore Foundation's EPiQS Initiative [GBMF4541, GBMF4411]
- Center for Excitonics, an Energy Frontier Research Center - U.S. Department of Energy (DOE), Office of Basic Energy Sciences (BES) [DESC0001088]
- NSF Graduate Research Fellowship Program [1122374]
- ETH Zurich Postdoctoral Fellowship program
- Marie Curie Cofund program at INL
- Elemental Strategy Initiative
- JSPS KAKENHI [JP15K21722, JP25106006]
- DOE BES Division of Materials Sciences and Engineering
- DOE [DE-AC02-07CH11358]
- [PTDC/FIS-NAN/3668/2014]
- Fundação para a Ciência e a Tecnologia [PTDC/FIS-NAN/3668/2014] Funding Source: FCT
Magnetic insulators are a key resource for next-generation spintronic and topological devices. The family of layered metal halides promises varied magnetic states, including ultrathin insulating multiferroics, spin liquids, and ferromagnets, but device-oriented characterization methods are needed to unlock their potential. Here, we report tunneling through the layered magnetic insulator CrI3 as a function of temperature and applied magnetic field. We electrically detect the magnetic ground state and interlayer coupling and observe a field-induced metamagnetic transition. Themetamagnetic transition results in magnetoresistances of 95, 300, and 550% for bilayer, trilayer, and tetralayer CrI3 barriers, respectively. We further measure inelastic tunneling spectra for our junctions, unveiling a rich spectrum consistent with collective magnetic excitations (magnons) in CrI3.
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