Construction of van der Waals magnetic tunnel junction using ferromagnetic layered dichalcogenide

Abstract

We investigate the micromechanical exfoliation and van der Waals (vdW) assembly of ferromagnetic layered dichalcogenide Fe0.25TaS2. The vdW interlayer coupling at the Fe-intercalated plane of Fe0.25TaS2 allows exfoliation of flakes. A vdW junction between the cleaved crystal surfaces is constructed by dry transfer method. We observe tunnel magnetoresistance in the resulting junction under an external magnetic field applied perpendicular to the plane, demonstrating spin-polarized tunneling between the ferromagnetic layered material through the vdW junction.

16 pages, 4 figures

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• Observation of nonreciprocal magneto-optical scattering in nonencapsulated few-layered CrI3
• Exfoliation and van der Waals heterostructure assembly of intercalated ferromagnet Cr1/3TaS2
• Mechanical and liquid phase exfoliation of cylindrite: a natural van der Waals superlattice with intrinsic magnetic interactions
• Anomalous Hall effect mechanisms in quasi-2D van der Waals ferromagnet Fe0.29TaS2