5:15 PM - 5:30 PM
△ [14p-A404-13] Increase in Ferromagnetic Transition Temperature on two-dimensional Ferromagnet Cr2Ge2Te6 induced by heterointerface
Keywords:two-dimensional materials, Ferromanget, van der Waals material
Recently, magnetism in layered van der Waals (vdW) materials has attracted great attention because of their unique magnetic properties stemming from their two-dimensional (2D) nature. Such layered vdW materials provide an opportunity to fabricate heterostructures free from constraints in conventional film growth and promise a unique route to explore new functionality of these materials based on the electric field and crystalline symmetry. One of the major issues in vdW ferromagnets is that the ferromagnetic transition temperature (Curie temperature) is relatively low. Here, we study magnetic properties in heterostructures of vdW ferromagnet Cr2Ge2Te6. We will report magneto-optical Kerr effects and detect hysteresis arising from ferromagnetism. The maximum Curie temperature (TC) observed in heterostructure reaches ~120 K, which is nearly twice the maximum TC ~ 60 K reported for Cr2Ge2Te6 alone.