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

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...

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Veröffentlicht in:	Applied physics letters 2015-09, Vol.107 (10)
Hauptverfasser:	Arai, Miho, Moriya, Rai, Yabuki, Naoto, Masubuchi, Satoru, Ueno, Keiji, Machida, Tomoki
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied physics Chalcogenides CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CLATHRATES Crystal surfaces CRYSTALS Exfoliation Ferromagnetic materials Interlayers MAGNETIC FIELDS MAGNETORESISTANCE Magnetoresistivity SPIN ORIENTATION SURFACES TUNNEL EFFECT Tunnel junctions Tunnel magnetoresistance VAN DER WAALS FORCES
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Zusammenfassung:	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 and the vdW junction.
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.4930311