Multifunctional Magnetic Oxide-MoS 2 Heterostructures on Silicon.

Correlated oxides and related heterostructures are intriguing for developing future multifunctional devices by exploiting their exotic properties, but their integration with other materials, especially on Si-based platforms, is challenging. Here we demonstrate van der Waals heterostructures of La 0.7 Sr 0.3 MnO 3 (LSMO), a correlated manganite perovskite, and MoS 2 on Si substrates with multiple functions. To overcome the problems due to the incompatible growth process, technologies involving freestanding LSMO membranes and van der Waals force-mediated transfer were used to fabricate the LSMO-MoS 2 heterostructures. The LSMO-MoS 2 heterostructures exhibit a gate-tunable rectifying behaviour, based on which metal-semiconductor field-effect transistors (MESFETs) with on-off ratios of over 10 4 can be achieved. The LSMO-MoS 2 heterostructures can function as photodiodes displaying considerable open-circuit voltages and photocurrents. In addition, the colossal magnetoresistance of LSMO endows the LSMO-MoS 2 heterostructures with an electrically tunable magnetoresponse at room temperature. Our work not only proves the applicability of the LSMO-MoS 2 heterostructure devices on Si-based platform but also demonstrates a paradigm to create multifunctional heterostructures from materials with disparate properties. This article is protected by copyright. All rights reserved.